free ammonia

例句：

1. 1.The prisoners were freed from their chains.
   囚犯们被从锁链中解放出来。
2. 2. The company was freed from debts and obligations.
   公司摆脱了债务和义务。
3. 3.The animals were freed from captivity.
   动物们被从囚禁中释放出来。