精品无码久久久久久国产_成人午夜在线视频一区_亚洲最大的av网站_亚洲欧美综合区自拍另类_91精品国产一区_日韩精品中文在线观看_一道本无吗dⅴd在线播放一区_国产精品旅馆在线_欧美午夜久久久_亚洲自拍在线观看_黑人精品xxx一区一二区_亚洲精品日韩久久久_在线视频一区二区_国产欧美久久一区二区_中文字幕精品在线视频_成人欧美在线观看

Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.

All that is in motion must be at peace； it is not what is at rest that should be considered peaceful.

自由不是做我們想做的事情的權(quán)力，而是做我們應(yīng)該做的事情的權(quán)利。

Never compromise on food safety—it’s the foundation of consumer trust.

All that we see or seem is but a dream within a dream.