查词历史：
- leapfrogging leapfrogged leap out
n.
v.
1.
N-UNCOUNT
（一人弯腰、另一人从其背上跳过的）跳背游戏 Leapfrog is a game which children play, in which a child bends over, while others jump over their back.
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...children engaged in activities such as riding, playing leapfrog, or football.
在玩骑马、跳背和足球等的孩子们
2.
VERB
（借势）超越，赶超 If one group of people leapfrogs into a particular position or leapfrogs someone else, they use the achievements of another person or group in order to make advances of their own.
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It is already obvious that all four American systems have leapfrogged over the European versions...
4个美国系统全部超过了欧洲版本，这已是显见的事实。
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American researchers have now leapfrogged the Japanese and are going to produce a digital system within a year or two.
美国研究人员现已乘日本人之东风赶超而上，将在一两年内研制出一套数字系统。
计算机
- 1.跳步(检验程序)
