But in general, it's hard to come up with the really clever algorithm.

但是通常来讲，真正巧妙的算法,确实非常难设计。

麻省理工公开课 - 计算机科学及编程导论课程节选

And, this is a really clever reaction because titanium tetrachloride is a gas.

这是一个非常巧妙的反应,因为四氯化钛是一种气体。

麻省理工公开课 - 固态化学导论课程节选