I don’t think you can compare eras in tennis. Every era has its great players.
旅行的用途是用现实来调节想象力,而不是想象事情可能是怎样的,而是看到它们实际是怎样的。
The only limits you have are the limits you believe.
可持续性不再是可选项,而是当今世界生存的必要条件。