即使是养鱼的水也开始变得不新鲜，粪便和吃剩下的食物堆积，很快使水变得污秽。
Even if the water in which the fish are reared starts out fresh, the build-up of faeces and uneaten food soon makes it foul.
即使是养鱼的水也开始变得不新鲜，粪便和吃剩下的食物堆积，很快使水变得污秽。
Even if the water in which the fish are reared starts out fresh, the build-up of faeces and uneaten food soon makes it foul.
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