In babies under 3 months old, crying is almost always a sign of physical need-she may be hungry or gassy or wet or hot or just plain uncomfortable.

对于三个月以下的宝宝来说，哭常常提示的是身体需求。她可能饿了，有嗝打不出来，热了，或者单纯就是不舒服了。

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Meanwhile an unusually wet autumn and a low pressure weather systems over the eastern seas have pushed the murk from steel plants in the south back up into the North China plain.

与此同时，一个异常潮湿的秋天和东部海域的低气压天气系统将南方钢铁厂排放的污染物推回华北平原。

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