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粒径2.5微米以下的颗粒物主要来自道路扬尘等。()

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The first thing to keep a long friendship is to contact with your friends not too often.()

在智能制造系统中,人类的部分脑力劳动被机器所替代,计算机能够模仿人的思维方式,进行条件判断、数据分析、资源管理、调度决策等行为。()

Travelling can open our mind to new culture.()

Male and female are more likely to buy their Christmas gifts online now.()

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