這是甄子丹最害怕的一次，跟泰森拍對打戲，差點被當場KO！

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這是甄子丹最害怕的一次，跟泰森拍對打戲，差點被當場KO！This is the most frightening time for Yen Zidan, who almost got KO on the spot while filming a duel with Tyson!