Retrieval error

retrieval [ri'tri:vəl]

n. 收回，挽回;检索;

error ['ɛrɚ]

n. 错误，过失;[法]误审，违法;[数]误差;

err漫游，犯错误+or表名词，物 → 错误

And some ice-cold lemonade.

还有冰凉的柠檬汁。

These shoes are worn-out.They've lasted a long time.

这些鞋子旧了。已经用了很长时间了。

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。