下雨过后,开窗呼吸新鲜空气也需要把握好时机。雨下过一段时间或雨过天晴时,才能开窗。因为下雨之前,往往伴有大风,风中夹杂着树木上、楼房上沉积的灰尘,此时最好先关上窗户,以免把室外的污染物吹入 After the rain, open the window to breathe fresh air also need to grasp the timing. It is only when the rain has passed or it rains. Because before the rain, often accompanied by strong winds, the wind mixed with trees, the dust deposited on the building, the best time to close the window at this time, so as not to blow the outdoor pollutants