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大热天,大家都爱将门窗打开,使室内空气流通,温度放散,这样就会使人感觉舒服,工作起来也有劲。为什么空气流通,人会感觉舒服呢? 我们知道,人一刻不停地呼吸着空气,利用空气中氧气在
On a hot day, everyone loves to open doors and windows to allow indoor air to circulate and the temperature to spread. This will make people feel comfortable and work hard. Why do people feel comfortable when the air circulates? We know that people constantly breathe air and use oxygen in the air.