逻辑可不懂得什么叫做差不离，绝对象太阳不承认蜡烛那样。

Now, logic knows not the "almost," absolutely as the sun knows not the candle.

youdao

更快，更大，更壮-不，可不能总这样。

Faster, bigger, stronger - no, not always.

youdao

我可不能三个星期不上班。

I can't afford to go away three weeks from work.

youdao

So I'm not suggesting that it's an optional problem set that you shouldn't do.

一个可做可不做的问题集,因为不做它你会后悔的。

麻省理工公开课 - 计算机科学及编程导论课程节选