有ㄧㄡˇyǒu眼ㄧㄢˇyǎn無ㄨˊwú珠ㄓㄨzhū

比喻缺乏辨別能力。《西遊記·第六回》：「你這廝有眼無珠，認不得我麼！吾乃玉帝外甥，勅封昭惠靈顯王二郎是也。」《野叟曝言·第三六回》：「卑職有眼無珠，一時冒昧，罪該萬死！」反獨具隻眼

英(idiom) blind as a bat (figuratively), unaware of who (or what) one is dealing with, to fail to recognize what sb a bit more perceptive would