Leapfrogs
v. 跳背, 交替前进, 跃过( leapfrog的第三人称单数 )
🗣️ 情景例句
So I know.
所以我了解这些。
Don't forget to cable to let us know you arrived safely.
不要忘记在你安全地到达后打电报让我们知道。
I never heard of anyone making a'skeleton', as we were taught at school.
我从未听说过任何一位作家像我们在学校学的那样，动笔前先列什么提纲。