at the mercy of

at the mercy of or at sb's mercy
adj. phr.
In the power of; subject to the will and wishes of; without defense against. 任凭某人的摆布；完全受某人的支配。
- The small grocer was at the mercy of people he owed money to. 这位小食品杂货商被他的债主们捏在手心里。

- 英语>简体中文, 美国习语词典

at the mercy of
prep. 完全受...支配，任凭...摆布，在...掌握中

- 英语>简体中文, 英汉化学大词典

at the mercy of
任…摆布, 在…前毫无办法
- The enemy were at the mercy of us. 敌人在我们面前毫无办法。

- 英语>简体中文, 简明英汉词典