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 human body is a masterpiece of biological engineering.

數學的目標不是解決問題，而是理解問題。

Strategy is about setting yourself apart from the competition. It's not a matter of being better at what you do – it's a matter of being different at what you do.

The future of quantum computing will depend on our ability to control and manipulate quantum systems with high precision.

我們需要設計符合人類心理的政策，而不是與之相悖。

Immature love says: 'I love you because I need you.' Mature love says: 'I need you because I love you.'

The tyranny of a prince in an oligarchy is not so dangerous to the public welfare as the apathy of a citizen in a democracy.