Warning: file_put_contents(/www/wwwroot/ppbbbu/n94.cn/cache/6e09b29bd674bdc5a6d380ad840b7095.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 indoors air pollutants例句_indoors air pollutants英汉例句_indoors air pollutants双解例句_94生活常识网有道词典
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。