yyh心随我动
我来回答你的追问吧回顾历史，我们会得出很多经验和教训。experience做“经验”讲是不可数的，做“经历”讲才是可数的。所以翻译是这样的 Reviewing the history,we will draw a lot of experience and lessons. moral 是道德的意思
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lesson n.教训；课，功课，课业；榜样，典范vt.教训，告诫，训斥；给 ... 上课We should learn this lesson by heart. 我们应当记住这一教训。That accident taught them a lesson.那次事故给了他们一个教训。The bitter lesson is branded on his memory.那个惨痛的教训深深铭刻在他记忆中。
