Definition
to fire at and typically kill a person, without showing any compassion
毫无怜悯地射击某人，通常致命
He shot down the innocent passerby in the street without showing any compassion.
他毫无怜悯地射杀了街上的无辜路人。
The robbers opened fire as soon as they entered the bank, shooting the guard down mercilessly.
劫匪一进入银行就开火，毫不留情地射杀了警卫。
In the skirmish, the enemy shot down several soldiers without any hesitation or sympathy.
在冲突中，敌人毫不犹豫或同情地射杀了几名士兵。