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掩:遮蔽,遮盖;盗:偷。偷铃铛怕别人听见而捂住自己的耳朵。比喻自己欺骗自己,明明掩盖不住的事情偏要想法子掩盖。
[plug one's ears while stealing a bell;deceive oneself as an ostrich that buries its head in the sand] 把耳朵捂住去偷铃铛。比喻欺骗不了别人,只能欺骗自己 今若宿驿,正犹掩耳盗铃也。——明· 赵弼《钟离叟妪传》