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、sentiment

(基于思想或情感的)态度，情绪

Public sentiment rapidly turned anti-American.

公众情绪迅速转变，开始反对美国。

He's found growing sentiment for military action.

他发现支持采取军事行动的情绪日益高涨。

(用言辞表达的)见解，感想

I must agree with the sentiments expressed by John Prescott.

我不得不对约翰·普雷斯科特的见解表示赞同。

The Foreign Secretary echoed this sentiment.

外交大臣附和了这一看法。

(尤指对过去的事过度而无谓的)感伤，眷恋

Laura kept that letter out of sentiment.

劳拉因无法释怀而一直保留着那封信。

The coronation was an occasion for extravagant myth and sentiment.

加冕典礼是极尽奢华和怀旧的仪式。