Steam condenses to water when it touches a cold surface.

水蒸气触及冷的表面即凝结成水。

《新英汉大辞典》

The key is to change the ocean's local surface temperature, say, by pumping up deep, cold water or using giant plastic tubes to help mix the ocean layers.

关键因素是改变大洋局部的表面温度，通过将底层的冷空气抽到上层或者使用巨大的塑料板，以混合大洋不同深度各层。

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The layer is removed, washed in cold water and dried for about a week on a wooden surface.

撤出该层，放在冷水洗涤后于木板表面干燥一个星期左右。

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"What we are seeing in Iceland is that as the magma particles get towards the surface, they interact with the very cold water and they chill to form glassy fragments and these glassy fragments are small, they have sharp edges and when those get up in the air that is what is causing the risk to aviation."

VOA: standard.2010.04.15

The heat exchangers and pipework required to make a 10MW plant already exist, but the 100MW facility will need a pipe that is not only 1km long (in order to reach the cold water at depth) but ten metres in diameter (in order to bring enough of that cold water to the surface).

ECONOMIST: Ocean heat may be used to generate electricity

The habitable zone is the region of a planetary system which is neither too hot nor too cold - such that water on the surface of a planet will neither evaporate nor freeze, but instead can stay liquid.

BBC: NEWS | Science/Nature | Earth-like planets may be common

The water was cold and clear, and all around us sunlight was breaking through the surface.

BBC: Meet June��s BBC Travel Photo Nomad