Exhaust fan do you use?

你使用排气扇吗？

Of course, exhaust fan is indispensable.

当然，排气扇是必不可少的。

Did not know that does not have the exhaust fan, how.

不知道是没有排气扇，还是怎么的。

And its widespread application in exhaust fan is presented.

并说明其在引风机上具有广泛的应用前景。

Instead of turning on the exhaust fan when showering, leave it off.

淋浴时不是打开排气扇而是让它关闭。