ruthlessly

例句：

1. 1. The murderer was caught with no mercy, ruthlessly eliminating every witness.
   凶手被无情地逮捕，毫不留情地消灭了每一个证人。
2. 2.The police were ruthlessly pursuing the criminal.
   警方无情地追捕着罪犯。
3. 3.The execution was carried out ruthlessly, without any form of mercy.
   执行死刑时毫无怜悯，非常残酷。