Don't drink water of past sell-by date, because dirty water make people ill easily.
用英语翻译下列句子:不要喝过期水, 不干净水很容易使人生病.
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Rollerblades are not allowed. For the safety of the wild life, please don't bring water balloons.
直排溜冰鞋是禁止玩 、 为了野生动物的健康请不要准备灌水汽球.
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