1、get out

逃離；被迫離開

They probably wanted to get out of the country.

他們或許想逃離這個國家。

I told him to leave and get out.

我叫他滾開。

退出（組織）；撤銷（承諾）

I wanted to get out of the group, but they wouldn't let me.

我想退出這個團體，但是他們不同意。

Getting out of the contract would be no problem.

撤銷這個合同不會有任何問題。

（消息、信息等）泄露，為人所知

If word got out now, a scandal could be disastrous.

如果消息現在傳出去，可能會是災難性的丑聞。

Once the news gets out that Armenia is in a very critical situation, I think the world will respond.

我認為亞美尼亞局勢非常嚴峻的消息一旦披露，全世界都將作出反應。

2、challenge

挑戰;難題

I like a big challenge and they don't come much bigger than this.

我喜歡大的挑戰，而所有挑戰中再沒有比這更大的了。

The new government's first challenge is the economy.

新政府面臨的第一個難題是經濟問題。

(成功地)應對挑戰，迎接挑戰

The new Germany must rise to the challenge of its enhanced responsibilities.

一個嶄新的德國必須迎接挑戰，承擔更多的責任。

They rose to the challenge of entertaining 80 schoolchildren for an afternoon.

他們一個下午成功接待了80名學童。

懷疑，質疑(真實性、價值、權威等)

Democratic leaders have challenged the president to sign the bill.

民主黨領袖對總統簽署這項法案提出了質疑。

The move was immediately challenged by two of the republics.

此項動議立即遭到其中兩個共和國的反對。