So I asked him: "If you had to make a rough calculation, right now, and no one's going to hold you to it, how much water do you think we have on earth?"
因此我问道；“如果你现在有个粗略的计算，没有人让您为其负责。那么你认为地球上有多少水呢？”
So I asked him: "If you had to make a rough calculation, right now, and no one's going to hold you to it, how much water do you think we have on earth?"
因此我问道；“如果你现在有个粗略的计算，没有人让您为其负责。那么你认为地球上有多少水呢？”
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