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、confront

(问题、任务或困难)降临，使面临

She was confronted with severe money problems.

她面临严峻的资金问题。

Ministers underestimated the magnitude of the task confronting them.

部长们低估了他们所面临的任务的艰巨性。

勇敢地面对;正视

We are learning how to confront death.

我们正在学习如何直面死亡。

NATO countries have been forced to confront fundamental moral questions.

北约国家被迫正视基本的道德问题。