剑桥高阶英汉双解词典 - ruthless
/'ru:θ.ləs/
adjective
* not thinking or worrying about any pain caused to others; cruel
无情的;冷酷的;残忍的
1. ruthless ambition
冷酷无情的野心
2. a ruthless dictator
残忍的独裁者
3. Some people believe that to succeed in this world you have to be ruthless.
有些人认为,在这个世界上要想成功必须冷酷无情。