This expression refers to encounters between ships of hostile nations. One ship might fire a shot at another, not in order to hit it, but to warn it to move.
这个表达源于敌对国船只在海上相遇时，一方可能向另一方鸣炮，不是为了击中目标，而是警告其快速离开。
This expression refers to encounters between ships of hostile nations. One ship might fire a shot at another, not in order to hit it, but to warn it to move.
这个表达源于敌对国船只在海上相遇时，一方可能向另一方鸣炮，不是为了击中目标，而是警告其快速离开。
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