vacillate

• I vacillated for a long time between medicine and seminary .
  在学医和进神学院之间我犹豫了很久。
• He's vacillating now .
  他现在踌躇不定。
• Modern character is inconstant, divided, vacillating .
  现代人的个性是无常的，分裂的，摇摆不定的。
• He is vacillating between leaving and staying on
  他在去和留之间犹豫不决。
• The voters are vacillating between the two candidates
  选民在两个候选人之间举棋不定。
• He vacillated between refusal and consent
  到底要拒绝或答应他犹豫不决。
• She vacillated between her two admirers
  在两个追求者之间，她举棋不定。
• She vacillates between her two admirers
  她对她的两个追求者犹豫不定
• She vacillated between hope and fear
  她时而抱有希望,时而心存恐惧
• She vacillated between hope and fear
  她时而抱有希望,时而心存恐惧