know both your opponent and yourself
了解你的对手和你自己
以上为机器翻译结果，长、整句建议使用 人工翻译 。
This proverb advises: Know both yourself and your opponent in order to enhance your strong points and attack his weak points. That is the secret of victory.
这条谚语告诉我们：既要了解自己又要了解对方，发挥自己的长处，攻击对方的短处，这样才能有把握取得胜利。
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