Warning: file_put_contents(): Only 0 of 4941 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/62383.com/index.php on line 55 indoors air pollutants例句_indoors air pollutants英汉例句_indoors air pollutants双解例句_流逝汉英词典
These levels of indoor air pollutants may be of particular concern because most people spend about 90％ of their time indoors. 由于多数人大约90％的时间都在室内度过，室内空气污染的这种程度应当引起人们的特别关注。