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 past is a foreign country; they do things differently there.

The future of energy is not either/or - it's about finding the right balance between traditional and new energy sources.

每一項科學發現都應該以其對人類福祉的貢獻來衡量。

A prophet is not without honor except in his own country and in his own house

你無法回到過去改變開頭，但你可以從現在開始改變結局。

最好的性能改進是從非工作狀態到工作狀態的轉變。

谷物不僅僅是商品，它是文明的基礎。

You can't wait for others to arrange your life; what you want, you must strive for yourself.

To define is to limit.

數學不知道種族或地理邊界；對于數學來說，文化世界是一個國家。