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有过必悛,有不善必惧。
解释:有了过错一定要悔改,干了坏事肯定会觉得害怕。
The moment you stop to think about whether you love someone, you've already stopped loving that person forever.
The pursuit of mathematical truth is a lifelong journey.
介导疼痛的分子非常古老,揭示了这种感觉在进化中的深远根源。
The joy of discovery in mathematics is unparalleled.