Vacillate between
在…之间动摇不定
🧩 词语组成解析
between
[bɪ'twin]
prep. 在…之间;私下，暗中;在…中任择其一;来往于…之间;
adv. 当中，中间;
🗣️ 情景例句
Oh, that reminds me.
噢 ，倒提醒了我。
A guilty conscience is a self-accuser.
做贼心虚，良心自诛。
What on earth has happened to trouble you so?
到底发生什么事让您如此发愁？