The relationship between wages and employment is not as straightforward as some models suggest.

The arithmetic of modular forms is a key to understanding the deeper structures of number theory.

不要害怕冒险和尝试新事物。

I'm interested in all kinds of pictures, however they're made.

I can resist everything except temptation.

我告诉过你们我会成为第一，我做到了。

我们必须向自然学习如何高效利用资源。