08 Sound

片尾BGM：我想在你的脉搏中跳舞   若想查到节目中同版本，可在网易云音乐搜索： Picon_ピコン君の脉で踊りたかった 

文稿奉上

Hi im Evelyn! 好久不见，小田园终于回来啦！！今天讲讲有关声音的小知识。

别问片尾是啥，问就是彩蛋。

First, what is sound? Sound is actually a type of energy, it happens when something shakes or moves back and forwards very quickliy, the shaking movements are called vibrations. You hear sounds because vibrations travel through the air in to ear. You can't hear any sound in the space because there is no air around you.

Did you try to speak something underwater with your friend? Can you guess the right thing she is saying? I think no, right? You can only hear some noise right. So can sound travel underwater? Actually yes, it can! Sound moves four times faster th   an through air! It can travel such long distance that whales can hear each other when they are over a hundred kilometres apart. You can only hear noise because there are too many sounds under water that send into your ears.

生词大搜索——

没错又是这个part~

Vibrations振动。声音就是是由振动造成的。

Distance距离。一般指的是纸上的距离，或者路程。

Kilometers千米.数学题里写的单位km，全称就是kilometers.

今天的文章挺简单哒，生词不多也不难，但还是希望大家能记住哦~

那么接下来是中文翻译。

首先，你知道什么是声音吗？声音其实是一种能量，当有什么东西摇晃的厉害，那就是振动。你能听见声音，就是因为振动穿过空气，传到了你的耳朵里。所以，如果你在太空里，你是听不见任何东西的，因为那里没有空气。

你有没有尝试过在水下与你的朋友讲话？你能猜到他在说什么吗？是不是什么也分辨不出来？只能听到咕噜咕噜的噪音？所以，声音到底能不能在水下传播呢？答案是肯定的！水中声音的传播速度甚至比空气中还要快，鲸鱼能够与相距它一百千米的同伴对话。你在水下只能听见噪音，正是因为水下有太多的声音传进你的耳朵里了。