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、assume
假定;以为;假设
It is a misconception to assume that the two continents are similar.
关于这两块大陆相似的假设是一种误解。
If the package is wrapped well, we assume the contents are also wonderful.
如果包装精美,我们就会认为里面装的也是好东西。
掌管,夺取,取得(权力);承担(责任)
Mr Cross will assume the role of Chief Executive with a team of four directors.
克劳斯先生将出任首席执行官,手下有4位经理。
If there is no president, power will be assumed by the most extremist forces.
如果没有主席,权力就会落入最极端的过激分子手中。
表现出(某种表情);装出,做出(某种样子)
He contented himself by assuming an air of superiority.
他表现出一副高高在上的样子以获得自我满足。
Prue assumed a placatory tone of voice.
普吕以一种安慰人的语气说话。