mass noun
- a game in which players in turn vault with parted legs over others who are bending down跳背游戏（众游戏者轮流从弯腰者背上跃过）。
(-frogged, -frogging)no obj.
1- perform such a vault进行跳背游戏：
they leapfrogged around the courtyard.
他们在院子中玩跳背游戏。
1.1
- no obj., with adverbial(of a person or group) surpass or overtake another to move into a leading or dominant position超越：
she leapfrogged into a sales position.
她超越别人获得销售职位。
1.2
- with obj. pass over (a stage or obstacle)越过, 跨越（阶段, 障碍）：
attempts to leapfrog the barriers of class.
跨越阶级障碍的尝试。