vacillate between

例句：

1. 1.He vacillated between two options and finally decided to go with the first one.
   他在两个选项之间犹豫不决，最后决定选择第一个。
2. 2.The company's leadership was in a state of vacillation over the new strategy.
   公司的领导层对新策略的态度摇摆不定。
3. 3. She vacillated between her desire for success and her fear of failure.
   她犹豫不决，既渴望成功又害怕失败。