办丧事虽有一定的礼仪,但还是以哀痛为本。 
"In mathematics, you don't understand things. You just get used to them."
海洋不仅是一种资源;它是我们必须为子孙后代承担的责任。
The challenge in computer science is not just to solve problems, but to solve them in a way that is both efficient and elegant.
We don't inherit the land from our ancestors; we borrow it from our children.
最好的读者是那些为了偷师而阅读的作家。