您好！learn by 通过…学到…；从…中吸取教训： We should learn by the mistakes of others.我们应该从别人的错误中吸取教训。Learn wisdom by the follies of others.[谚语]从别人的愚蠢中学到智慧。 若有帮助，望您采纳，谢谢您的支持！
