It's just energy that goes back and forth.

只是能量在来。

Kompotis placed the mouse cages on a platform that moved from side to side.

科姆波蒂斯将鼠笼放在来的平。

Its narrow beam traveled from black trunk to black trunk, illuminating the ground.

这道窄窄的光柱在漆黑的树干间来，照亮了下面的土地。

But the time doesn't matter as much as the bandwidth that the brain requires to move back and forth.

但时间并不像带宽, 大脑需要来。

You wave your arm - you move your arm back and forth to get someone's attention.

你挥手臂——你的手臂来以引起某人的注意。

Then, carefully move the instrument back and forth to unearth the potatoes by lifting the roots.

然后，小心地来挖掘工具，通过拔起根部来挖出土豆。

One end of the malleus connects to the inner eardrum and moves back and forth when the drum vibrates.

锤骨的一端与内鼓膜相连，当鼓膜振时来。

This shows that friction, or the rubbing of one substance against another, produces heat.

这个事实说明, 摩擦, 或者说紧密接触的两个物体的来, 能够产生热量。

A weed whacker is a machine that goes back and forth back and forth and it spreads the seed everywhere.

除草机是一种来的机器，它把种子撒得到处都是。

It had fingers that caught and held the stalks while the knife blade moved back and forth, cutting with each stroke.

它的手指抓住并握住茎，而刀刃来，每划一刀。

So the lip corners move back and forth a lot.

所以唇角来很多。

The puppy moves back and forth quickly.

小狗快速地来。

The grooves create a sound as the stylus moves back and forth and up and down, creating vibrations.

当唱针来下时，凹槽会产生声音，产生振。

Vibrations are made when something moves back and forth.

当某物来时会产生振。

Can you see the string move back and forth?

你能看到绳子来吗？

It usually moves back and forth, in and out of dirt.

它通常来，进出泥土。

The head moves less back and forth on this one.

头部在这一个来较少。

As she moved back and forth she sang, a hymn.

她来时唱了一首赞美诗。

Her eyes sped from left to right as she read through the message and a grimly pleased expression spread across her face.

读了起来，目光迅速地来，脸现出欣慰的表情。

The plane will move back and forth, or go up and down quickly.

飞机会来，或快速下。