If at first you don’t succeed, goes the old saying, try, try again. Good advice, up to a point. But let me offer a modification: even when you do succeed, try, try again. Tempting as it is to declare victory and move on, in many endeavours there is much to be said for rethinking an apparently satisfactory formula.
俗话说，如果一开始你没有成功，那就再试一次。在某种程度上，这是个好建议。但让我提供一个修改：即使你真的成功了，也要尝试，再尝试。虽然宣布胜利并继续前进是很诱人的，但在许多情况下，重新思考一个显然令人满意的方案是很有意义的。
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