在暴风云的形成过程中，带正电荷的粒子与带负电荷的粒子相互分离。

The separation of positively and negatively charged particles takes place during the development of the storm cloud.

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因此，这种纳米管膜，可以同时使钠离子和氯离子(这是带负电荷)从海水里分离，从而成为一个淡化海水的便宜方式。

So a nanotube membrane that allows both sodium and chloride ions (which are negatively charged) to flow out of seawater could become a cheaper way to desalinate water.

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运行时，传送带驱动机器人前进，利用亲油排水的纳米材料将油从水面上分离出来。

As it turns, the belt propels the robot forward and lifts oil off the water with the help of a nanomaterial that's engineered to attract oil and repel water.

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