The men laid down a base of rifle and machine-gun fire, greatly aided by a barrage of mortars from Sergeant Sampson.Then the tanks shot their 75mm cannon down the lane.是什么意思_The men laid down a base of rifle and machine-gun fire, greatly aided by a barrage of mortars from Sergeant Sampson.Then the tanks shot their 75mm cannon down the lane.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句