Past tense

past [pæst]

adj. 过去的，以前的;结束的;前任的; n. 过去，过往;往事;[语]过去时; prep. 超过，超出;远于;越过; adv. 经过，超过;

tense [tɛns]

adj. 拉紧的;肌肉绷紧的;神经紧张的;[语]（语音）紧的; n. [语]时，时态;〈古〉时间; v. 使或变的紧张;

tense=tens伸展→绷紧的，紧张的

Then you close your eyes and say the magic words.

然后，闭上眼睛念魔语。

It's cool this afternoon.

今天下午很凉。

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。