Mathematics is the art of giving the same name to different things.
Urban forestry proves that nature and cities can thrive together.
放空你的心,如水一般无形,化为水吧,我的朋友。
A proof is a way to convince yourself and others that something is true.
有时你必须与你爱的人分开,但这并不会让你减少对他们的爱。有时你会更爱他们。
何必需要浅碧深红的艳丽色彩,桂花本就是花中第一流