Onus probandi

onus ['onəs]

n. <正>责任，义务;负担，重担;

on=oner负担+us表示名词 → 负担，责任

Mr. Douglas is currently on leave.

道格拉斯先生眼下正在休假。

How long are you going to stay here?

你要在这里停留多久？

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。