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我们必须想出更好的节约用水的方法。
We must work out a better method of saving water…
youdao
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另一种方法，节约用水是不浪费任何一滴干净的水。
Another way to save water is not to waste any drop of clean water.
youdao
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另一种方法，节约用水是不浪费任何一滴干净的水。
Another way to save water is not to waste any drop of clean water.
youdao