Lazarette

I'm going to the library to do some research.

我要去图书馆搞些调研。

His presence in the room was not noticed.

没有人注意到他在房间里。

when they would be capable of providing information about traffic jams and suggesting alternative routes, when they would be used in hospitals to help doctors to diagnose illnesses, when they would relieve office workers and accountants of dull, repetitiv

计算机可以使办公室人员和会计免除那些枯燥、重复的劳动。