The study says female-headed households have a particularly tough time.

VOA: standard.2009.09.20

- She said, "When I was dating my husband-- this is thirty years ago-- we were having a tough time.

她说，，“我和我老公拍拖那会儿-,那是30年前的事儿了-,有段时间关系很恶劣。

耶鲁公开课 - 心理学导论课程节选

So we finally got tough and we got Paul Volker in there and central banks around the world all managed to get tough around that time and we killed inflation but it created a recession.

所以，我们最终强硬地实施,并且将保罗？沃尔克作为主席,世界各地的中央银行,全都在那段时期内严格的实施,最终我们消除了通货膨胀，却制造了经济衰退。

耶鲁公开课 - 金融市场课程节选

Beets much larger than that can be tough and have to be cooked for a long time.

VOA: special.2010.03.02

The winner will face a tough challenge in the general election against long-time liberal Democratic Senator Barbara Boxer.

VOA: standard.2010.06.08

North Korea, whose economy is in tatters and is facing tough international sanctions is participating in the World Expo for the very first time.

VOA: standard.2010.05.02

"And it's a tough mission, but I think it is an attainable mission as long as we take the time to make sure that the mission is out there and laid out pretty well.

VOA: standard.2009.11.16

I really did. I mean,sure, maybe we could do it again, but it's tough I mean the amount of money time and effort that goes into these things puts a huge strain on the city and the resources, so I hope we go for it again but I think it's hard,".

VOA: standard.2009.10.02

He also offered some tough talk. "I emphasized that this has to be a point in time in which we begin to write a new chapter based on improved governance, a much more serious effort to eradicate corruption, joint efforts to accelerate the training of Afghan security forces so that the Afghan people can provide for their own security,".

VOA: standard.2009.11.02