v.以棒打，胁迫；n.扑克牌的二十一点； 变形： 过去式：blackjacked过去分词：blackjacked现在分词：blackjacking第三人称单数：blackjacks 英英释义： blackjack[ 'blækdʒæk ]n.a common scrubby deciduous tree of central and southeastern United States having dark bark and broad three-lobed (club-shaped) leaves;