我们必须节约用水。
If we don 't want this kind of thing to happen we must save water from we can begin with doing small things.
如果我们不希望这种事情发生我们必须要节约用水从我们可以开始做小事情。
So we must save water by having a shower instead of a bath. We can save water by fixing dripping taps immediately and we can also save water by not washing under a running tap.
所以我们应该用淋浴代替泡澡来节约水，同时及时修好滴水的水龙头，并且不要开着水龙头洗东西。
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