Astronomers therefore prefer dry sites with little water vapor, which is generally found at higher altitudes.

因此，天文学家更喜欢水蒸气很少的干燥地点，而水蒸气通常出现在海拔较高处。

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One of these is the subtraction of water from the ocean by means of evaporation—conversion of liquid water to water vapor.

其中之一是通过蒸发的方式，把液态水转化为水蒸气——来减少海洋中的水分。

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Such feedbacks might involve ice on land and sea, clouds, or water vapor, which also absorb radiant heat.

这种反馈可能涉及陆地和海洋上的冰、云或水蒸气，这些也会吸收辐射热。

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Mister Zundt says the vehicle releases only water vapor and is "totally clean."

VOA: special.2009.09.07

There's the water phase, there's the ice cube is the solid phase, and there's some water, gas, vapor, and that's one bar.

里面放一块冰，这是固态；,于是我们得到了水，冰和水蒸气三态共存的点。

麻省理工公开课 - 热力学与动力学课程节选

And, even Cavendish, one of the things that he observed was that hydrogen could be combusted to produce water vapor.

甚至卡文迪许都观察到了,氢气燃烧,会产生水蒸气。

麻省理工公开课 - 固态化学导论课程节选

Scientists have previously established the existence of water on Mars in the form of ice at the poles and water vapor, and pointed to geological features that appear to have been carved by water ages ago.

CNN: Life on Mars?

Burns touts the cars' zero emissions instead of exhaust, they emit water vapor and their reliance on hydrogen made primarily from natural gas, but also from water.

NPR: On the Road with GM's Newest Hydrogen Car

All that comes out of the tailpipe is a little trickle of water and water vapor.

FORBES: Fueling Hope