解释：既要追悔以往的过失，也要预防将来可能发生的错误。

I'm not afraid to take risks.

文学是一种表达，是对内心的探索。

The meaning of a sentence is not just in the words themselves， but also in the illocutionary act it performs.

技术应该为人类服务，而不是反过来。

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

音乐是一种奇妙的东西。