1、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。

怀疑，质疑(真实性、价值、权威等)

Democratic leaders have challenged the president to sign the bill.

民主党领袖对总统签署这项法案提出了质疑。

The move was immediately challenged by two of the republics.

此项动议立即遭到其中两个共和国的反对。

2、flourish

繁荣;兴盛;兴旺

Business flourished and within six months they were earning 18,000 roubles a day.

生意红火起来，不出6 个月他们就可以每天赚 18,000 卢布了。

Racism and crime still flourish in the ghetto.

城市贫民区的种族主义和犯罪仍然十分猖獗。

(植物或动物)长势好，茁壮成长

The plant flourishes particularly well in slightly harsher climes.

这种植物在气候条件稍差一点的地区长势尤其好。