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
Thank you, you are a real credit to the car repair industry.
感谢你，你真的为汽车维修业增了光。
Who is the author of this novel?
这篇小说的作者是谁？
Could you tell me your secret for a long, happy life?
你能告诉我长时间地过着快乐的生活的秘诀吗？