phrasal verbphr vSHOOTto shoot someone and badly injure or kill them, especially someone who cannot defend themselves 开枪击伤[击毙]〔尤指不能自卫的人〕
A policeman was gunned down as he left his house this morning.
今晨一名警察离家时遭到枪击。
nGrammar
Gun down is usually passive.
Examples from the Corpus
gun down• Still, given our fondness for gunning each other down, fearing the sight of blood seems perfectly sound.• Use your pistol to dispense with individualguards or your machine gun to mow down a line of enemies.• The shrapnel and spent machine gun bullets pattered down among the cactus like rain.• The gun hangs down below the hem of her skirt.• It follows, of course, that each time a gun is laid down it must first be broken and unloaded.• The new ships will have two sets of rapid-fire radar-controlled multi-barrel guns to shoot downmissiles.• She put the gun back down on the desk.• Submachine guns mowed down students by the hundreds, perhaps by the thousands.