no obj.
1- jump forward in a crouched position蹲跳：
he bunny-hopped around the stage.
他围着舞台蹲跳。
1.1
- with obj. move (a vehicle) forward jerkily使（车辆）颠簸前进。
1.2
- move a bicycle forward by jumping in the air while standing on the pedals骑自行车腾空。
1.3
- with obj. jump (an obstacle) on a bicycle in this way（骑车）跳过（障碍）。
1
- a jump in a crouched position蹲跳。
1.1
- a short jump forwards on a bicycle骑车短跳。
1.2
- an obstacle on a cycling course which is generally cleared by jumping the bicycle over it（自行车腾空越过的）车道上的障碍。