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

As much as child e'er loved, or father found.

The public have an insatiable curiosity to know everything, except what is worth knowing.

當信息不對稱或激勵不一致時，市場就會失靈。

海洋不僅僅是資源；它是我們的未來。

The atmosphere doesn't care about political boundaries when it comes to climate change.

成功不是幸福的關鍵。幸福才是成功的關鍵。