精讲巧练
重点词汇
1. at the mercy of
【原句回放】The voyages of travelers before the 17th century show that they were not at the mercy of the sea even though they … (P12)
【点拨】at the mercy of 表示“受…的支配”相当于under the control of sb or in the power of sb.
如：They were lost at sea, at the mercy of wind and weather.
The people who were caught in the mountain had to be at the mercy of wild beasts.
