It's just energy that goes back and forth.

只是能量在移动。

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

科姆波蒂斯将鼠笼放在移动平台上。

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

这道窄窄光柱在漆黑树干间移动，照亮了下面土地。

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, 大脑需要移动。

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

挥动手——手移动以引起某人注意。

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

然后，小心地移动挖掘工具，通过拔起根部挖出土豆。

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

锤骨一端与内鼓膜相连，当鼓膜振动时移动。

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

这个事实说明, 摩擦, 或者说紧密接触两个物体移动, 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.

除草机是一种移动机器，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.

它手指抓住并握住茎，而刀刃移动，每划一刀。

So the lip corners move back and forth a lot.

所以唇角移动很多。

The puppy moves back and forth quickly.

小狗快速地移动。

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

当唱针上下移动时，凹槽会产生声音，产生振动。

Vibrations are made when something moves back and forth.

当某物移动时会产生振动。

Can you see the string move back and forth?

能看到绳子移动吗？

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

它通常移动，进出泥土。

The head moves less back and forth on this one.

头部在这一个上移动较少。

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

她移动时唱了一首赞美诗。

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，目光迅速地移动，脸上现出欣慰表情。

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

飞机会移动，或快速上下移动。