vacillate
['væsileit]
v.游移不定, 踌躇, 犹豫
例句与用法：
She vacillated between hope and fear.
她时而抱有希望，时而心存恐惧。
词形变化：
副词: vacillatingly | 名词: vacillation | 动词过去式: vacillated | 动词过去分词: vacillated | 动词现在分词: vacillating | 动词第三人称单数: vacillates |
详细释义：
vi.
1. 动摇; 犹豫; 踌躇[(+between)]
She is vacillating between hope and fear.
她一会儿充满希望一会儿深怀恐惧, 如此反复不已。
2. 摇摆; 波动