地面灰尘大，空气湿度低，地面的人和车流使灰尘搅动起来。
The surface dust, low humidity of the air, ground and traffic dust stirred up.
WEG 单相全封闭式电动机专业设计，用于脏的，灰尘大的和过湿的环境下。
WEG single-phase totally enclosed motors are specially designed for operating in environments of dirt, dust and excess moisture.
每当他见我扫地毯，见到我扬起一大团灰尘，他就像一个小矮人一样咯咯叫开了。
When he sees me sweeping the carpet, when he sees what a cloud of dust I raise, he begins to cluck like a pygmy.
应用推荐