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There's hardly any vapor pressure above your ice water glass.
冰水混合物上方,水蒸气的气压非常小。
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Energy can flow across the glass but I put a lid on top, and so the water can't get out.
能量可以穿过杯壁流动,但是我在顶上加了盖子，所以水不能跑出来。
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So, for instance, if you take a glass of water and you pour it into another glass that's shallow or tall, it won't change the amount of water you have.
比如说,你有一杯水,将水倒进另一个更浅或者更深的杯子里,含水量并未发生任何改变
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It could be a glass of water with ice in it.
它可以是一杯有冰块的水。
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You take a glass of ice water and set it down.
这是液态；
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So a closed system would be, for instance, a glass of ice water with an ice cube in it, with the lid on top.
因此闭系可以是，比如说，一杯放了,一个冰块的冰水，顶上加了盖子。
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You need to know if it's an equilibrium, and you also need to know how many components you have in your system So, a glass of ice water with an ice cube in it, which is a heterogeneous system, has only one component, which is water, H2O.
要知道它是不是平衡的，你还需要知道,你的系统中有多少组分,一杯放了冰块的水，虽然它是个非均匀系统，但它只有一种组分，那就是水。
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