Life is short, but if we live it right, once is enough.
生命短暂,但如果我们活得正确,一次就足够了。
In computational complexity, we are not just dealing with the limits of what we can compute, but also with the limits of what we can prove.
海洋不仅是食物的来源,也是我们星球生态系统的重要组成部分,我们必须为子孙后代保护它。
遥远的姑射山上,有神人居住。肌肤像冰雪白皙,姿态柔美如同处女,不食人间五谷,呼吸清风,饮用甘露,乘着云气,驾驭飞龙,遨游在四海之外。