一个好的数学家总是准备好进行概括。

No one had ever had such a friend, so affectionate,so loyal and so skillful.

当你悲伤的时候，就会喜欢看落日。

Music transcends language barriers.

I rarely explain or respond, but I know what I'm doing.

能源的未来在于可持续性和创新。

沉默不是缺少什么，而是存在一切。