vacillates

例句:

• The Policeman hesitates, vacillates, then takes another rather uncertain step or two forward.
  警察犹豫了一下, 满腹狐疑地又往前挪了一两步.
  来自辞典例句
• As Prufrock vacillates , so the voice of the Quartets hesitates and changes tone and tack.
  就象普鲁弗洛克优柔寡断一样,《四重奏》中的声音也犹豫不定.
  
• She vacillates between men twice her age and men younger than she.
  她犹豫不决，不知道是该选择年龄比她大一倍的男人还是比她小的男人。
  
• The fate of books vacillates with the fancies of book-lovers.
  来自I. D