评论
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1、come back
回忆起;回想起来
He was also an MP — I'll think of his name in a moment when it comes back to me.
他当时也是一位国会议员，他的名字我得想一下才能记起来。
When I thought about it, it all came back.
当我回想起来，往事全都涌上了心头。
重新流行;再度时兴
I'm glad hats are coming back.
我很高兴又开始流行戴帽子了。
2、challenge
挑战;难题
I like a big challenge and they don't come much bigger than this.
我喜欢大的挑战，而所有挑战中再没有比这更大的了。
The new government's first challenge is the economy.
新政府面临的第一个难题是经济问题。
(成功地)应对挑战，迎接挑战
The new Germany must rise to the challenge of its enhanced responsibilities.
一个崭新的德国必须迎接挑战，承担更多的责任。
They rose to the challenge of entertaining 80 schoolchildren for an afternoon.
他们一个下午成功接待了80名学童。
(对真实性、价值、权威等提出的)怀疑，质疑
The demonstrators have now made a direct challenge to the authority of the government.
示威者现在直接对政府的权威发出了质疑。
