What happens when food and petrol supplies run low?
食物和汽油这些补给品减少时会发生什么情况呢？
Some parts of the United States have begun to run low on water.
美国一些地区已开始面临缺水困境。
What happens when food and gasoline supplies run low?
如果食物和汽油供应减少，会出现什么情况呢？
What happens when food and gasoline supplies run low?
如果食物和汽油供应减少，会出现什么情况呢？
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