onprep.在 ... 之上；由 ... 支撑着；在（某一天）；关于；基于adv.穿着；向前（移动)；表示持续性adj.表示已连接、处于工作状态或使用中；发生；值班oncostn.杂费

1. Let's not rush to conclusions. Just because a man has blood on his hands doesn't mean he's guilty.
   咱们不要轻率地下断定，不能因为一个人手上有血就马上断定他是罪犯。
2. Now that father's retired he'll have more time on his hands.
   现在父亲退休了，他空闲的时间多了。
3. If the manager hadn't accepted some of the team's demands he could have had a mutiny on his hands.
   领队要不是答应了队员的部分要求，他可能已众叛亲离了。
4. Some fifty shares lie on his hands.
   他还有50来股没脱手。