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。
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。
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。
However, practice shows that students 'ability to grasp the function conception is quite poor, it is till one of the tough conceptions in students 'mathematics studying.
但实践表明，学生函数概念掌握的水平较低，函数概念仍是学生数学学习中理解较困难的概念之一。
Studying Chinese is tough but it is interesting.
学习汉语很难却有意思 。
Studying Chinese is tough but it is interesting.
学习汉语很难却有意思 。
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