relentlessly

例句：

1. 1. The thief was caught by the police with relentless determination.
   这个小偷被警察无情地抓住了。
2. 2.The firefighters fought relentlessly to save the lives of the trapped people.
   消防员们无情地战斗，以拯救被困的人们的生命。
3. 3. The scientist relentlessly pursued his research until he achieved his goal.
   这位科学家不懈地追求他的研究，直到他实现了他的目标。