Hear Your Heart

Hear Your Heart

听听你的心跳

When I visit the doctor, he listens to my heart with a stethoscope. The stethoscope is cold. It makes me shiver. I like my stethoscope much better. It isn't cold. My stethoscope is a cardboard tube. My sister, Lisa, has one, too.

当我去看病的时候，医生总是会拿一个听诊器听听我的心跳。 听诊器凉凉的，我忍不住会哆嗦一下。 我更喜欢我自己的听诊器，它可没那么凉。 我的听诊器是个硬纸板筒子。 我妹妹丽莎也有一个一样的。

We save tubes and turn them into stethoscopes. Sometimes they are tubes from old rolls of paper towels. Sometimes they are tubes from old toilet-paper rolls. Any kind of cardboard tube will do. This is how you listen to someone's heart: Ask a friend to find the heartbeat on the left side of her chest. Put one end of your tube on this spot. Now put your ear at the other end. We listen to our friends’ hearts, and they listen to ours. Phil's heart beats like this: pum-PUM pum-PUMpum-PUM pum-PUM. Molly's heart beats the same way. So does mine. So does Lisa's.

我们把一些筒状的东西留下来当听诊器,有时候拿的是用完的处方纸巾卷芯,有时候则是卫生纸卷的卷芯，只要是硬纸板做的都行。 怎么来听别人的心跳呢? 你可以请一个朋友找出他左边胸膛上心脏的位置,把纸筒的一端放在那个位置上,再把耳朵凑近纸筒的另一端听一听。 我们互相听听对方的心跳。 菲尔心脏跳动的声音是这样的:-，怦-。 莫莉也是，我也是，丽莎也是。

Dad's heart is a little slower. It beats like this: ka-DUM ka-DUM ka-DUM ka-DUM. Andrew is only eleven months old. Mom holds him so we can listen to his heart. Andrew's heart has a very quick beat. It goes: tup-pa tup-pa tup-pa tup-pa tup-pa.

爸爸心脏跳动的声音比较慢，听起来是这样的 怦-咚，怦-咚，怦_咚 ，怦-咚。 小安只有十一个月大。 妈妈抱着他，让我们听听他的心跳。 小安的心跳很快。 嗒-怦 ，嗒-，嗒-，嗒-。

Put your hand on your chest. Can you feel your heart? Your heart is about as big as your fist. It doesn't look like a heart on a valentine. It is shaped more like a pear. Your heart has tubes attached to it. When your heart beats, it moves blood through your body.

把手放在左胸上，你能感觉到心脏正在跳动吗? 你的心脏大概有你的拳头那么大,它的形状可不像情人节常常看到的爱心,反而更像一只梨。 我们的心脏有许多序贯相连，心脏跳动的时候，就能把血液输送到身体的各个地方。

Your heart is full of blood. When it beats, it squeezes itself together. That's when the heart contracts. Blood squirts out into some of the tubes. Then your heart stops squeezing and opens up again. That's when the heart expands. Blood flows into it through the other tubes. Blood flows away from your heart in tubes called arteries. Blood flows into your heart in tubes called veins. In this picture the arteries are colored red. The veins are black.

我们的心脏里充满了血液。 当心脏跳动时，表示正在将血液挤压出去，这就叫做收缩,把血液挤压到一些血管里。接着心脏便会停止挤压,再度舒展开来,这就叫做舒张,这时血液会经过别的血管流进心脏来。 从心脏将血液运送到全身器官的血管，称为动脉。 而将血液送回心脏的血管，称为静脉。 请看右页图:以红色表示的血管就是动脉，而以黑色表示的血管是静脉。