你不必完美才能激励他人。

Innovation in forestry technology will redefine how we manage and conserve our forests.

There are more important things in life than winning or losing a game.

有人说我有唱诗班男孩的声音，却长得像女校长。

如果让鼻子挡住了，该怎么做俯卧撑呢？

The goal of mathematics is not to solve problems, but to understand them.