说穿了，人生是充满着一连串的课程，不经一事不长一智。
Life, after all, is a succession of lessons which are meant to be lived to be understood.
简用便宜的布料做了一件新衣服，一洗便缩小了很多，太小了。真是不经一事，不长一智啊！
Jane made her new dress from cheap cloth, and when she washed it, it shrank and was too little. Live and learn.
让孩子自己去社会上闯吧，不经一事，不长一智！
Let the children to leave home to gain both experience, and wisdom.
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