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 speech we hear is an indication of that which we don't hear. It is a necessary avoidance, a violent, sly, anguished or mocking smokescreen which keeps the other in its place.

擺脫誘惑的唯一方法就是屈服于它。

The study of heuristics reveals how we make quick, efficient decisions, but also how these shortcuts can lead to systematic errors.

技術(shù)必須服務(wù)于社會，而不是相反。

解決數(shù)學(xué)問題的喜悅是無與倫比的；這是純粹的智力勝利的時刻。