"Life is tough, and things don’t always work out well, but we should be brave and take risks. We shouldn’t hesitate to take the next step."

如何道歉：快速、具体、真诚。

The real test of an algorithm is not just its correctness, but its scalability and robustness.

We wish to discuss a structure for salt of deoxyribose nucleic acid. This structure has novel features which are of considerable biological interest.