如果我们继续浪费水的话，河流总有一天会枯竭的。
If we continue to waste water, the river would eventually dry up.
如果我们继续浪费水，那么最后一滴水将会是人类的眼泪。
这样的浪费水平是个悲剧，如果想在可持续满足我们未来粮食需求的挑战中取得成功，就不能让它继续下去。
This level of wastage is a tragedy that cannot continue if we are to succeed in the challenge of sustainably meeting our future food demands.
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