relentless

"relentless" Chinese translation ("relentless" in Chinese, "relentless" 中文翻译, "relentless"发音):

relentless

adj. 无情的,冷酷的,残酷的 [a ~ attack 毫不留情的攻击 He was ~ in demanding repayment of the debt. 他冷酷无情地要求偿还那笔债 ]