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

對較大收入征收較高比例的稅收，等于對工作和節儉征收了一項稅收；對人們因為工作更努力、儲蓄更多而征收罰款。

A speculator is a man who observes the future, and acts before it occurs.

There is no man, however wise, who has not at some period of his youth said things, or lived in a way the consciousness of which is so unpleasant to him in later life that he would gladly, if he could, expunge it from his memory.

數學的美在于它能夠用一種既精確又普遍的語言來描述宇宙。

我們要做全球化的企業，服務全球市場。