N-COUNT
(掩盖某人的活动或真实意图的)烟幕，幌子
If something that you do or say is a smokescreen, it is intended to hide the truth about your activities or intentions.
例句
He was accused of putting up a smokescreen to hide poor standards in schools.
他被指责放烟幕弹企图掩盖学校教育水平低下的事实。