not know you are born
不知道自己幸福在哪里
口语·批评不知足的人
英文释义
to be ignorant or unappreciative of how fortunate one is
例句
You complain about your job, but you don't know you are born—some people would love to have it.
典故来源
源自19世纪英国，指一个人生活安逸却浑然不觉，缺乏对自身好运的认识。