leap frog
英
美
- frog n.蛙；嗓音沙哑；马的蹄叉；刀剑的挂环
- leap v.跳跃；跃过；跃n.跳跃；跃
名词 leapfrog:
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advancing as if in the child's game, by leaping over obstacles or competitors
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a game in which one child bends down and another leaps over
动词 leapfrog:
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jump across
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progress by large jumps instead of small increments
