为什么沙漠里会形成湖泊？
如果你发现自己在沙漠里，蹲在树或灌木后面几乎是不可能的。
If you find yourself in the desert, squatting behind a tree or shrub is hardly an option.
换句话说，我的意思是在沙漠里，你有碳颗粒，它们会收集表面的水分。
In other words, I mean in the desert you have the carbon granules which would collect moisture on top of them.
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