As long as I've been here this is the toughest thing that's ever happened to this city and I want to urge everybody out there to give whatever you can - as little as you can or as much as you can - to give something because there's a lot of people really hurting right now.

VOA: special.2010.05.17

That has to count as the toughest day, not only in my career, but also in the history of that particular presidency.

那可以算得上是最艰难的一天，不仅在我的职业生涯里，在总统任期的历史中,也是最艰难的一天吧。

普林斯顿公开课 - 国际座谈会课程节选

What was the most difficult day for you as Chief of Staff and the most joyous day, and the toughest assignment President Bush gave you?

作为白宫办公厅主任,最艰难的一天是哪天,最高兴的又是哪天，还有布什总统派给你的,最难的任务是什么？

普林斯顿公开课 - 国际座谈会课程节选

"Our challenge now is to finish the job." He acknowledged the toughest part of the process may lie ahead;

VOA: standard.2009.12.25

One of the jobs of a White House Chief of Staff is to settle disputes among cabinet members and offcials, and it's also one of the toughest jobs.

白宫办公厅主任的,工作之一是解决争端,在内阁成员和其他官员间进行调解，这也是最辛苦的工作之一。

普林斯顿公开课 - 国际座谈会课程节选

It was the toughest measure taken in Asia to curb the spread of the virus.

VOA: standard.2009.05.08

And the toughest foreign policy issue?

那最困难的外交政策问题呢？

普林斯顿公开课 - 国际座谈会课程节选

Some also expressed disappointment that Mr.Obama was not scheduled to attend the end of the Copenhagen summit when the toughest negotiations are expected to take place.

VOA: standard.2009.11.26

Toughest assignment?

最难的任务吗？

普林斯顿公开课 - 国际座谈会课程节选