次要规则是那些规定主要规则的创建、修改和废止的规则。
可持续性不仅仅是一个目标,更是我们对后代的责任。
I don’t just want to be the best, I want to be the best ever.
Laughter and tears are both responses to frustration and exhaustion. I myself prefer to laugh, since there is less cleaning up to do afterward.
数学是给不同事物起相同名称的艺术。
The computer revolution hasn't started yet.