adv.无情地；残忍地
The sun is roasting us mercilessly. 太阳无情地烧烤着我们。
It went on a rampage and mercilessly drilled another robot. 它继续狂暴残忍地钻击另一个机器人。
Thousands of Chinese civilians were mercilessly tortured and murdered. 数以千计的中国人民在这里被残忍地拷打杀害。
