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

Language is the house of being. In its home man dwells. Those who think and those who create with words are the guardians of this home.

我堅(jiān)持我所相信的，不在乎別人怎么想。

我們今天開(kāi)采的石頭將塑造明天的景觀。

The PAC learning framework provides a formal way to analyze the efficiency and effectiveness of learning algorithms.

改變不會(huì)一夜之間發(fā)生，但每一步前進(jìn)都是朝著正確的方向邁出的一步。