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 future of liberal democracy depends on its ability to reform itself and address the legitimate grievances of those who feel left behind by globalization and technological change.

The key to success in research is to focus on fundamental problems that have long-term impact.

反思本身不是罪惡。罪惡在于反思的狀態，以及反思帶來的靜止。

我經歷過最寒冷的冬天是舊金山的夏天。

Without ecological balance, there is no real economic benefit.