Leapfrog
01
馬跳び, 馬跳びゲーム
a game for children in which a group of players try to leap over another group that are bending down
02
跳び越え, 飛び越えて進むこと
advancing as if in the child's game, by leaping over obstacles or competitors
to leapfrog
01
飛躍的に進歩する, 大きな跳躍で進む
progress by large jumps instead of small increments
02
飛び越える, 跳び越す
jump across
