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

In all affairs， it's a healthy thing now and then to hang a question mark on the things you have long taken for granted.

一個(gè)人應(yīng)該經(jīng)常考慮他擁有的比他想要的多多少。

I don't let the world tell me who I am.

預(yù)測(cè)未來的最好方法就是創(chuàng)造它。

The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay of symmetry and topology leads to novel quantum states of matter.

練習(xí)時(shí)多流汗，戰(zhàn)場(chǎng)上少流血。