求翻译下列英文用翻译软件的绝对不采纳!When compressed air is used, the pressure

求翻译下列英文
用翻译软件的绝对不采纳!
When compressed air is used, the pressure should be kept no higher than is necessary to undertake the work satisfactorily.
Should compressed air used to clean the working space, and in no circumstances should it be directed at any part of a person’s body.