AT DIFFICULT moments politicians have been known to turn to drink.

政客们在危急关头的借酒浇愁是出了名的。

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The truth is sometimes difficult to get at.

有时真相很难查明。

《牛津词典》

Incumbent officeholders are difficult to defeat at the polls.

现任官员很难在选举中被击败。

《柯林斯英汉双解大词典》

Today,the solution to the problem is so common that it is difficult to understand that there was a problem at all.

VOA: special.2010.07.14

So I started to talk to the VCs and asking for $10 million at a very, very difficult time in Internet history.

就在互联网历史上最艰难的时期，我开始跟风险投资商接洽，向他们要1000万美元。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

Isn't it difficult being a mother and a professor at the same time and keeping a balance between the two?

同时做母亲和教授是不是很困难呢？两者之间取得平衡不容易吧？

教授的梦想 - SpeakingMax英语口语达人

These new transitions are now at difficult moments, making your engagement all the more important.

UN: Secretary-General

She then measures various metrics such as persistence at difficult tasks, self-reliance, and selfish inclinations.

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"I have always appreciated and valued his friendship and good counsel particularly at difficult and sensitive times in the peace process, " the Taoiseach added.

BBC: NEWS | UK | Northern Ireland | Church leader to retire this year