unstable [ʌnˈstebəl]

例句:

• Their politics consisted of unstable power-plays between rival groups.
  他们的政治活动包括竞争团体间反复多变的打压行动。
  来自柯林斯例句
• The situation is unstable and potentially dangerous.
  情况不稳定，可能有危险。
  
• She was physically delicate and psy-chologically unstable.
  她身体孱弱，心理上也不够稳定。
  
• The unstable surface makes the proprioceptive system work harder.
  来自WSJ
• They are also known to be somewhat unstable.
  来自SA
• Beyond that, the situation was more unstable.
  来自BBC