Prescriptible

The airport rescheduled a flight.

机场改变了航班时间。

If you run after two hares,you will catch neither.

同时追两兔，一只也难捕。

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。