One of the most powerful of all weather systems, hurricanes are powered by the heat energy released by the condensation of water vapour.

作为所有天气系统中最强大的系统之一，飓风是由水蒸气凝结释放的热能所驱动的。

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A cloud is a condensation of water vapour in the atmosphere.

云是由大气中的水蒸气凝结成的。

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The technique, called laser-assisted water condensation, could one day unlock the secrets of weather cycles and enable humans to decide where and when it rains.

这项名为激光助水凝结的技术有一天将揭开气象周期的秘密，并帮助人类决定下雨的事件和地点。

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While that argument makes the alarmist blogs and MSNBC, it neglects that, everything else being equal, if hurricanes are becoming rainier, they must be getting stronger, as the fuel that drives the kinetic whirl of the tropical cyclone is the heat released by the condensation of water.

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Such particles act as nuclei for the condensation of water vapour into the droplets of which clouds are composed.

ECONOMIST: Climatology: Grey-sky thinking | The

The consequent condensation of the water vapour it is carrying heats the air further (the change of state from gas to liquid sheds latent heat), causing it to continue rising.

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