我们的地表和空气中都有水汽存在,而当空气中水汽饱和或是受冷,使得空气无法承受其重量,水汽就会液化成水珠。
We've got water on the ground and in the air. And when the air can't hold any more moisture because it's totally saturated or it cools down, you get condensation.
我们的地表和空气中都有水汽存在,而当空气中水汽饱和或是受冷,使得空气无法承受其重量,水汽就会液化成水珠。
We've got water on the ground and in the air. And when the air can't hold any more moisture because it's totally saturated or it cools down, you get condensation.
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