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
Some people seem too think its for practicing grammar rules and learning lists of words.
一些人认为它是用来操练语法规则和学习一大堆单词。
You are a very considerate person.
你是一个深思熟虑的人。
Idealists have objected to the practice of camping, as to the packaged tour,
理想主义者像反对旅行社安排一切的一揽子旅游一样反对露营的作法，