spectral懂你英语 Level5 Unit3 Part2

2021年1月9日发(作者：周文)
L5-U3-P2 英语流利说 5-3-2 懂你英语 Level5 Unit3 Part2
L5-U3-P2-1 Listening : The Circulatory System 1
A flow chart, like this one, shows how a process begins and ends, and
the steps in between.
The process can be of almost any kind, from manufacturing a tire to
creating an advertisement.
Therefore, learning how to describe and explain a process in English
is important.
It's important for teachers, engineers, and people who provide
customer support.
A flow chart, like this one, shows how a process begins and ends, and
the step-in between. The process can be of almost any kind, from
manufacturing a tire to creating an advertisement.
(1) A flow chart, like this one, shows how a process begins and ends,
and the steps in between.
(2) The process can be of almost any kind, fro manufacturing a tire to
creating an advertisement.
(3) Therefore, learning how to describe and explain a process in
English is important.
(4) It's important for teachers, engineers, and people who provide
customer support.
One process that we are all familiar with is our body's circulatory
system.
This system provides oxygen throughout the body and eliminates
carbon dioxide, which is a waste product.
If something goes wrong with this system, we need to repair it
quickly, or we die.
So it's important to understand it and keep it functioning properly.
What happens with something goes wrong with the system can't be
repaired? -If it can't be repaired, we will die.
It provides oxygen to the body and eliminates carbon dioxide.
One process that we are all familiar with is our body's circulatory
system.
The process can be of almost any kind, from manufacturing a tire
to creating an advertisement.
Therefore, learning how to describe and explain a process in
English is important.
It's important to keep it functioning properly ...or we will die.
It's important to keep it functioning properly or we will die.
It's important for teachers, engineers, and people who provide
customer support.
A flow chart, like this one, shows how a process begins and ends,
and the steps in between.
If something goes wrong with this system, we need to repair it
quickly, or we die.
What does the circulatory system do? -It provides oxygen to the
body and eliminates carbon dioxide.
It provides oxygen to the body and eliminates carbon dioxide.
It’s important to keep it functioning properly, or we will die.
First, the most important requirement for the system to work is a
supply of air.
Without fresh air with sufficient oxygen, the process won't keep us
healthy and alive.
So the process begins by breathing in air, which happens when the
lungs expand and draw in air.
Once inside the lungs, oxygen in the air is exchanged for carbon
dioxide in the blood.
This exchange happens when blood cells release carbon dioxide and
absorb oxygen.
This blood is now oxygenated blood, which means it carries oxygen.
What happens inside the lungs? -Oxygen is exchanged for carbon
dioxide.
Once inside the lungs, oxygen in the air is exchanged for carbon
dioxide in the blood. This exchange happens when blood
cells release carbon dioxide and absorb oxygen.
What kind of air is require to keep us healthy and alive? -fresh air
with sufficient oxygen
(1) After exchanging CO2 fox oxygen, oxygenated blood flows to the
heart.
(2) From the heart it is pumped to the rest of the body.
(3) The carbon dioxide which was exchanged for oxygen is breathed
out.
(4) This happens when the lungs contract.
To summarize, the process begins by inhaling air and oxygenating the
blood.
The oxygenated blood in the lungs then flows back to the heart.
The CO2 which came from the blood is exhaled, and the next cycle
begins.
Where does the CO2 come from? -blood that comes from the heart
How does the process begin? - by inhaling air and oxygenating the
blood
Where does the oxygenated blood go? -back to the heart
Note that the blood in the lungs flows in a loop from the heart.
The blood which enters the loop from the heart carries carbon
dioxide.
Once the carbon dioxide is exchanged for oxygen, the blood continues
through the loop and exits into the heart.
The oxygenated blood is then pumped to the rest of the body.
How does the blood in the lungs flow to from the heart? -It flows in a
loop that connects the lung and heart.
Inside the lungs, oxygen in the air is exchanged for carbon
dioxide in the blood.
The system won't work without a supply of air.
From the heart it is pumped to the rest of the body.
Once inside the lungs, oxygen in the air is exchanged for carbon
dioxide in the blood.
The blood travels to and from the heart in a loop that begins and
ends in different parts of the heart.
What happens to the oxygenated blood after flows to the heart? -
It pumps to the rest of the body.
To stay healthy and alive, we need fresh air with sufficient
oxygen.
The process begins by inhaling air and oxygenating the blood.
This happens when the lungs contract.
This exchange happens when blood cells release carbon dioxide
and absorb oxygen.
Without fresh air with sufficient oxygen, the process won't keep us
healthy and alive.

L5-U3-P2-2 Listening : The Circulatory System 2
As you can see, everything depends on the flow of blood to and from
the heart.
So how does the heart do this?
First, the heart, which is a muscle, has 4 chambers.
From one chamber, blood is pumped to the lungs.
This is the blood that carries carbon dioxide.
When the oxygenated blood from the lungs comes back to the heart, it
enters another chamber.
This chamber is called the left atrium.
In addition to a supply of air, the circulatory system ...depends on the
flow of blood to and from the heart.
(1) First, the heart, which is a muscle, has 4 chambers.
(2) From one chamber, blood is pumped to the lungs.
(3) This is the blood that carries carbon dioxide.
(4) When the oxygenated blood from the lungs comes back to the
heart, it enters another chamber.
What does the blood pump to the lungs carry? -it carries CO2
(1) First, the heart, which is a muscle, has 4 chambers.
(2) From one chamber, blood is pumped to the lungs.
(3) This is the blood that carries carbon dioxide.
(4) When the oxygenated blood from the lungs comes back to the
heart, it enters another chamber.
From the left atrium, the oxygenated blood is pumped into another
chamber, the left ventricle.
The left ventricle then pumps the blood into the aorta, which is the
largest artery in the body.
From the aorta, the oxygenated blood passes through a network of
smaller arteries throughout the entire body, including the brain.
Blood returns to the heart through a system of veins and enters the
upper right chamber, the right atrium.
What is the largest artery in the body? -the aorta
From the left atrium, the oxygenated blood
is pumped into another chamber, the left ventricle. The left
ventricle then pumps the blood into the aorta, which is
the largest artery in the body. From the aorta, the oxygenated
blood passes through a network of smaller
arteries throughout the entire body, including the brain.
What does the heart use to pump blood throughout the body？- a
network of arteries and veins
From the left atrium, the oxygenated blood
is pumped into another chamber, the left ventricle. The left
ventricle then pumps the blood into the aorta, which is
the largest artery in the body. From the aorta, the oxygenated
blood passes through a network of smaller
arteries throughout the entire body, including the brain.
Now that we understand a little about the circulatory system, we can
ask what it needs to operate.
Of course it can't operate without energy.
This energy is supplied by another system, the digestive system,
which gets energy from food.
And of course these systems need to be supported and controlled.
Our skeletal system provides support, and our muscular system
provides control and movement.
Without support and movement, we couldn't get the food that we
need for energy.
Only plants can do this because they have a completely different
system, which gets energy directly from the sun.
What supply’s energy to the circulatory system? - the digestive
system
What provides physical support for our bodies? -the skeletal system
Without support and movement, we couldn't get the
food that we need for energy. Only plants can do this because they
have a completely different system, which gets energy directly from
the sun.
What life forms get energy directly from the sun? -plants
To summarize, the human body is like a huge, complex factory.
The language we use to describe how it functions is the same
language we use to describe almost any industrial process.
The vocabulary is different, but the processes, flows and logical
relationships are almost identical.
Think of some familiar process in your life or job and see if you can
describe and explain it in English.
What is like a huge, complex factory? - the human body
Our bodies function very much like a huge, complex factory.
From one chamber, blood is pumped to the lungs.
Our skeletal system provides support, and our muscular system
provides control and movement.
The circulatory system depends on the flow of blood to and from
the heart.
The human body is like a huge, complex factory. The language we use
to describe how it functions is the same language we use to
describe almost any industrial process. The vocabulary is different,
but the processes, flows and logical relationships
are almost identical.
The human body is like a huge, complex factory.
Our skeletal system provides physical support for our bodies.
Blood pumped to the lungs carries carbon dioxide.
Without support and movement, we couldn't get the food that we
need for energy.
Blood returns to the heart through a system of veins and enters
the upper right chamber, the right atrium.
The digestive system supplies energy to the circulatory system.
Plants get energy directly from the sun by using photosynthesis.

L5-U3-P2-3 Vocabulary : Verbs About Problems
Maintain: to preserve or keep things as they are.
Our quality is excellent, so your job is to maintain our high standards
and improve them if you can.
These historic buildings are very old and need to be maintained.
Because of economic competition, maintaining peaceful relations
isn't easy.
The house was very well maintained, even though it was extremely
old.

Disrupt: to cause disorder or confusion.
Smartphone’s have disrupted the way we live our lives.
Investors want to invest in companies that disrupt the way things are
done.
Sometimes disruptive technologies change the world in ways we
don't like.
His presence in the office is disruptive, so we need to get rid of him
as soon as possible.
Settle: to calm things down or end a conflict or disagreement.
He is too upset to think clearly, so he needs to settle down.
If we can't agree, we'll have to go to court to settle our differences.
With the development of agriculture humans could settle down
and form permanent communities.
They refuse to negotiate, so I'm afraid the only way
to settle the dispute will be through war.
Solve: to figure out or find the answer or solution to a problem.
The problem is difficult, so we need to find a way to solve it.
We can't solve that problem without using a computer.
He is very good at solving difficult problems, even under pressure.
Once they solved the problem, they realized that there were
several solutions to choose from.
Prove: to use evidence or logic to support an idea.
The police had to release him because they couldn't prove that he
committed the crime.
The best way to prove that something can be done is to do it.
We can't prove that he was there unless we can find more evidence.
Our quality is excellent, so your job is to maintain our
high standards and improve them if you can.
He is too upset to think clearly, so he needs to settle down.
The police had to release him because they couldn't prove that
he committed the crime.
These historic buildings are very old and need to be maintained.
We can't solve that problem without using a computer.