The little ship was at the mercy of the storm.

小船暴风雨摆布。

The enemy were at the mercy of us.

敌人在我们面前毫无办法。

Small businesses are completely at the mercy of the banks these days.

时下小企业完全受银行摆布。

The poor stationer was at the mercy of those from whom he borrowed money.

这可的文具商被他的债主们捏在了手心。