If you describe someone as merciless, you mean that they are very cruel or determined and do not show any concern for the effect their actions have on other people.
例句
Whistler, as always, was merciless.和以往一样,惠斯勒还是那么冷酷无情。...the merciless efficiency of a modern police state.现代极权国家残酷无情、只讲效率
英汉词典释义
adv.
无情地;残忍地
The cruel master beat his slaves mercilessly with a whip.残暴的奴隶主用鞭子狠心地抽打奴隶。The sun beat down mercilessly on the dry earth.阳光无情地照射在干旱的大地上。The reviewer mercilessly took apart the young writer’s first novel.评论家把这位年轻作者的第一部小说抨击得一无是处。
英英词典释义
Adverb
1. without pity; in a merciless manner;
"he was mercilessly trounced by his opponent in the House"