smokescreen

剑桥词典

something that hides the truth about someone's intentions
（用于掩盖真实意图的）烟幕
Instead of doing something about the problem , the city council is hiding behind a smokescreen of bureaucracy . 市议会躲在官僚作风的烟幕后，不采取措施解决问题。

an artificial cloud of smoke that is used to hide the movements or positions of soldiers from the enemy
（战斗中用于隐蔽军队的行动和位置的）烟幕 返回 smokescreen