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

科姆波蒂斯将鼠笼放在动的平台上。

It's just energy that goes back and forth.

只是能量在动。

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动，照亮了下面的土地。

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动, 能够产生热量。

So, skitter my hand back and forth?

所以还要动的手？

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

然后，小心地动挖掘工具，通过拔起根部挖出土豆。

It seems that tiger sharks move back and forth between the ocean floor and the surface quite often.

虎鲨似乎经常在海底和海面之间动。

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

当唱针上下动时，凹槽会产生声音，产生振动。

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

时间并不像带宽, 大脑需要动。

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，当鼓膜振动时动。

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

除草机是一种动的机器，它把种子撒得到处都是。

We have a rod here that goes through this apparatus over here and it rotates and moves back and forth.

们这里有一根杆子，穿过这个仪器，它旋转和动。

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，而刀刃动，每划一刀。

In this stage, the brain is extremely active and our eyes, although closed, dart back and forth as if we were awake.

在此阶段，大脑会非常活跃，虽然们的眼睛闭着，会快速动，彷彿们醒着一样。

Its narrow beam traveled from black trunk to black trunk, illuminating the ground. And then it fell upon a pair of feet.

这道窄窄的光柱在漆黑的树干间动，照亮了下面的土地，然后落在一双脚上。

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，目光迅速地动，脸上现出欣慰的表情。

The head moves less back and forth on this one.

头部在这一个上动较少。

When I turn them on, they go back and forth.

当打开它们时，它们会动。

She moved it backwards and forwards along its thin gold chain, a nervous habit.

她沿着细金链动它，这是一种紧张的习惯。

As it does so, the little limb here moves back and forth.

当它这样做时，这里的小肢动。