煤炭开采的创新不是要重新发明轮子,而是要让轮子更高效、更环保。
Innovation in coal mining isn't about reinventing the wheel, but about making the wheel more efficient and environmentally friendly.
A novel is a long answer to a question you can’t quite formulate.
The greatest tragedy is not death, but forgetting one's mother tongue.
I know that I can always improve, no matter how good I get.