To be skilled at speaking persuasively, especially to make excuses or intercede for someone.
尽管小李犯了点小错误，但他的同事善为说辞，替他向经理解释了情况，避免了不必要的麻烦。
Although Xiao Li made a minor mistake, his colleague was skilled at making excuses, explaining the situation to the manager on his behalf and avoiding unnecessary trouble.
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