GbEng
哨兵奉命一发现有动静就立即开枪。 The sentry had orders to shoot on sight.
他被暗杀者的近距离开枪打死。 He was mowed down by the assassin at point-blank range.
在打斗中为了自卫把人打死是一回事,残酷无情地开枪杀人是另一回事。 It's one thing to kill a man in a fight, in self-defence, another to shoot him in cold blood.