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
Smoking is harmful to your health.
吸烟有害健康。
Who is the greatest writer of our times?
谁是当代最伟大的作家？
one that still does not possess the bomb, of making it aware of the possibility,
对一个尚未拥有核弹、如果告诉它制造核弹的可能性，