vi. 跳背, 交替前进

vt. 跃过

1. advancing as if in the child's game, by leaping over obstacles or competitors

<noun.act>
the company still believes the chip is a leapfrog in integration and will pay huge dividends

2. a game in which one child bends down and another leaps over

<noun.act>

1. jump across

<verb.motion>
He leapfrogged his classmates

2. progress by large jumps instead of small increments

<verb.change>