If the planet has an atmosphere like ours, it would need about 50 percent cloud cover to stay cool enough for liquid water to exist on the surface.

如果这颗行星有跟我们一样的大气层，就需要覆盖大约50%的云层来保持它足够凉，这样液态水才能在行星的表面存在。

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If the withdrawal rate of the gas is such that the energy required to vaporize the liquid cannot be recovered from the surrounding air, the liquid phase will begin to cool.

如果气体提取速度太快，使得蒸发液体所需要的能量不能从周围空气中得到补充，液相会开始冷却。

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Tea bags, whether cool or warm, might have a soothing effect, though the liquid shouldn't be placed directly on the eyeball.

茶叶包无论温凉均可起到一定的舒缓作用，不过不要让其中的液体直接接触眼球。

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So you need first to take the liquid helium and cool it below 53 degrees Kelvin before you can do the Joule-Thomson to cool it even further to make liquid helium.

我们首先需要,把温度江都53k一下,然后利用焦耳-汤姆孙实验,来继续冷却它。

麻省理工公开课 - 热力学与动力学课程节选

There are a number of different reactors in use, most commonly water-cooled pressurised or boiling water reactors - though other reactor types are kept cool with the help of liquid metal, gas or molten salt.

BBC: Will Japanese crisis curb the rise of nuclear power?