The next unit of water might not even exist if we cannot get smart enough to use our single supply of water well.
如果我们不能有效使用我们仅有的水资源的话，那么下一个单元的水将不复存在。
The next unit of water might not even exist if we cannot get smart enough to use our single supply of water well.
如果我们不能有效使用我们仅有的水资源的话，那么下一个单元的水将不复存在。
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