欲罢不能 [- bà bù nénɡ]try to stop but cannot; be unable to stop even though one wants to; can't help carrying on:
•¶ 敌人于是就陷入了欲罢不能， 而又不得不罢的被动地位。 The enemy were thus reduced to a passive position in which they found it hard to give up the battle and yet had to give it up.