色多多在线观看播放-色多多在线观看高清免费-色多多在线观看视频-色多多在线看-欧美aaaaa性bbbbb小妇-欧美aaaav免费大片

The greatest use of a life is to spend it for something that will outlast it.

解析：好善惡惡是人之本能。

我們需要為拆卸而設計，就像為組裝而設計一樣。

The journey of solving a mathematical problem is as important as the solution itself, for it teaches us patience, persistence, and the joy of discovery.

I think of my pile of old paperbacks, their pages gone wobbly, like they’d once belonged to the sea.

未來屬于那些今天做好準備的人。

The connection between Galois groups and automorphic forms is one of the most profound mysteries in mathematics.