Six years later, as the two leaders meet at the G8 summit in Germany, Westerners studying Mr Putin's inner self will more likely see a tough strategic adversary.

6年之后，当两位领导人在德国再次相遇于八国集团的峰会，研究普京内心世界的西方人将更可能看到一个难缠的战略对手。

youdao

Now I know all these studying is tough on you.But when you get accepted to college you'll be happy.

我知道现在对你来说学习很难，可一旦你上了大学，你的前途就一片光明了。

youdao

I hate studying foreign languages. It is just too tough for me.

非母语的专业课程学习，对我来说实在是太困难了。

youdao

Motwani, who is about to complete his MBA, admits that simultaneously studying and launching a business has been tough, but in other ways helpful in that he has been immediately able to translate business theory into hard practice.

CNN: The MBA entrepreneurs

"It's a tough question, " said Kiesling, a civil engineering professor at Texas Tech University who has spent his life studying tornadoes and developing above-ground storm shelters to protect against them.

CNN: A tornado's heading your way: Now what?