Inside Your Body
美音、自然拼读、分级阅读与词汇复习
Introduction The human body is an amazing machine.
导言 人体是一个惊人的机器。
It has many parts that form systems.
它有很多部分组成系统。
The systems work together to keep you alive and healthy.
系统一起工作 保持你的生命和健康。
Let’s look at some of your body’s systems.
让我们看看你身体的一些系统。
Skeletal System There are 206 bones in your body that make up your skeleton.
骨骼系统 你体内有206个骨头构成你的骨骼
Your bones give your body shape and strength.
取出你的骨骼 让你的身体和力量。
They also protect your inner organs.
他们也会保护你的内脏
Most of the bones in your body are linked together at joints.
你体内的大部分骨头都是在关节上连在一起的.
There are different kinds of joints.
关节有不同种类.
Different joints let body parts move in different ways.
不同的关节让身体部分以不同的方式运动.
The joint that joins your arm and shoulder lets your arm rotate.
手臂和肩膀合在一起的关节让你的手臂旋转.
The joints at your elbows and knees let your lower arms and legs move up and down.
肘部和膝部的关节使下部的手臂和腿上下移动.
If it were not for moving joints, you could not walk, run, and swim.
如果不是为了移动关节, 你不能走,跑,游泳。
Muscular System Muscles control the movement of your body.
肌肉系统肌肉控制了身体的运动.
There are three kinds of muscles.
肌肉有三种.
Skeletal muscle is the muscle that is attached to bones.
骨骼肌是附着于骨骼的肌肉.
It makes your arms, legs, fingers, eyes, and other body parts move.
它使你的手臂,腿,手指,眼睛,以及其他身体部位能移动.
Cardiac muscle is the strong heart muscle.
心肌是坚固的心肌.
It works around the clock.
24小时工作
Smooth muscle is found in your skin, stomach, and other organs.
平滑肌存在于你的皮肤,胃,以及其他器官中.
Nervous System Your brain and thousands of miles of nerve fibers form your body’s communication system.
紧张系统 你的大脑和上千英里的神经纤维 构成了你身体的通讯系统
The brain is the control center.
大脑是控制中心.
It receives information from your sense organs—eyes, nose, ears, tongue, and skin.
它从你的感官器官——眼睛、鼻子、耳朵、舌头和皮肤——得到信息。
The brain tells muscles what to do.
大脑告诉肌肉该做什么。
If your fingers go near something hot, a signal goes to the brain.
如果你的手指靠近热的东西, 信号会传到大脑。
It then sends a signal to tell your hand to move away.
然后它发出一个信号 告诉你的手移动。
The brain controls many functions of your body without your thinking about them.
大脑可以控制你身体的许多功能 而不考虑它们
You breathe, your heart beats, and you digest food without thinking.
你呼吸,你的心跳, 你消化食物而不思考。
It just happens.
它只是发生。
For other things, the brain tells muscles what to do.
对于其他的事情,大脑告诉肌肉怎么做。
The brain decides what to do based on information from your sense organs.
大脑根据你的感官器官的信息决定怎么做
What it does depends a lot on what you have been taught.
其所行多取取所行所教.
If you see the problem 2 + 2 =?
如果你看到问题2+2=?
, you know the answer because you were taught how to add.
,你知道答案,因为你被教导如何添加。
Respiratory System This system takes care of breathing.
呼吸系统 这个系统负责呼吸
Oxygen is part of the air that you breathe.
氧气是空气的一部分 你呼吸。
Air enters through your nose and mouth.
气从口鼻入.
It travels to your lungs through your trachea, or windpipe.
它通过气管或风管进入肺部
Once air is in your lungs, blood removes the oxygen and takes it to the cells of your body.
一旦空气进入肺部,血液会取出氧气并带入身体的细胞.
Your lungs also remove carbon dioxide from blood.
你的肺也从血液中去除二氧化碳.
The carbon dioxide leaves your body every time you breathe out.
每次呼吸时二氧化碳都会离开你的身体.
Circulatory System The circulatory system is made up of your heart and blood vessels.
循环系统 循环系统由你的心脏和血管组成.
Your heart pumps blood through your body.
你的心跳出血液穿过你的身体。
It never rests.
它永远不会停止。
Blood delivers food and oxygen to every cell in your body.
血液会把食物和氧气送到你体内的每个细胞.
It also picks up waste products from cells and takes them to the lungs and kidneys.
它还从细胞中取出废品并带入肺和肾.
The waste then leaves your body.
废物会离开你的身体。
Digestive System Digestion breaks down the food you eat.
消化系统消化 打破你的食物。
Food must be broken into very tiny particles so that it can be carried by the blood to cells.
食物必须被分解成非常微小的颗粒,以便被血液携带到细胞.
When food enters your mouth, it mixes with saliva, or spit.
食物入口后会与唾液相混合,或吐出.
Saliva begins digesting the food.
Saliva开始消化食物。
When you swallow, food travels down a long tube to your stomach, where it mixes with other chemicals that digest it more.
吞下后,食物会从长管下行到胃部,并在那里与能消化更多食物的其他化学物质相混合.
Then the food enters your small intestine.
后入取食入小肠.
Here, more chemicals mix with the food.
这里,更多的化学物质与食物混合。
Blood moving through the walls of the small intestine carries away the digested food.
血液从小肠的墙上流出,带走了被消化的食物.
Food that is not digested continues on to your large intestine.
未被消化的食物继续到你的大肠上.
It is then removed as waste.
然后作为废物去掉。
Reproductive System Humans must reproduce in order to survive.
人类为了生存,必须繁殖生殖系统。
Special organs and glands in the reproductive system allow humans to make new human beings.
生殖系统中的特殊器官和腺体可以使人类成为新的人.
Conclusion This is a look at some important systems in your body.
结论 这是看看你体内的一些重要系统。
Many other parts also help you stay strong and healthy.
其他很多部分也帮助你保持强健健康.
You can help your body do its job by eating well and getting exercise.
你可以通过吃好和锻炼来帮助身体完成任务.
You can also help by avoiding stress and unsafe situations.
您也可以避免压力和不安全状况。