你有没有为将来打算过呢？

如果你真的在恋爱，你会用眼睛交谈。

第一个错误的假设是质量意味着好、奢华、闪亮或重量。质量意味着符合要求。

Every piece of plastic ever made still exists somewhere on this planet—that's both our challenge and our responsibility.

心理过程因其目的而存在。

What lies behind us and what lies before us are tiny matters compared to what lies within us.

定理是数学的里程碑。