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v.跳背，交替前进，跃过( leapfrog的第三人称单数 )； 英英释义： leapfrog[ 'li:pfrɔɡ ]n.advancing as if in the child's game, by leaping over obstacles or competitors"the company still believes the chip is a leapfrog in integration and will pay huge dividends"a game in which one ch
