Every piece of plastic we produce should have a clear path to being reused or recycled.

The metropolis has always been the seat of the money economy.

你为某件事付出的努力越多，实现时的成就感就越大。

在科学中最令人兴奋的短语，预示着新发现的，不是“我发现了！”，而是“这有点奇怪……”

We all need someone to kiss away our tears.

Behavior is determined by the total situation.

沉默是艺术中最响亮的声音。