自然喜欢简单。自然不是傻瓜。

A proof is a device for convincing someone else that a mathematical statement is true.

I understand that you're unhappy with the life that you've been given. But you know what? Eventually, we all have to accept reality. So, here it is. I am a person. You are not. I make the decisions. You do not.

解释：人参是补气效果最好的药材，三七则是补血效果最佳的药材，体现了中药的特效。

树是希望的象征，扎根于当下，伸向未来。

Technology gives us the tools to fish smarter, not harder.