Leapfrogged
v. 跳背, 交替前进, 跃过( leapfrog的过去式和过去分词 )
🗣️ 情景例句
He should just about get by in the exam.
他这次考试还能勉强及格。
To argue with the opponent about the principles
和反对者争论基本事项
What's Jim doing?
吉姆在干什么？