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

If you keep learning all the time you have a huge advantage.

世界總是在運動中。

The greatest threat to our forests is not logging, but indifference.

眼睛不能同時看清楚兩樣東西，耳朵不能同時聽清楚兩種聲音。

"In the quantum realm, the observer is not just a passive spectator but an active participant in the unfolding of reality."

經濟理論提供工具，但現實世界的測試會完善它們。

Writing, to me, is simply thinking through my fingers.

Where there is no property there is no injustice.