一个人做了好事应当忘记，不要念念不忘，更不要希冀别人回报。

The coal industry must evolve to meet modern environmental standards, or it will become obsolete.

If you want to make a bond, you are to take the risk of tearing.

Over the centuries the Indians developed sign language for communicating phenomena of interest. Programmers from different tribes (FORTRAN, LISP, ALGOL, SNOBOL, etc.) could use one that doesn't require them to carry a blackboard on their ponies.

写作是一种勇气之举——你必须愿意暴露自己最深层的想法。

我不想成为那种瘦瘦小小还露胸的人，我真的不想那样。