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
I'm not looking for a full-time job.
我不会去找一个上全天班的工作。
Didn't I tell you before?
我不是告诉过你吗？
It's about 400 yards from here.
离这儿大约有400码。