As blind as a bat 有眼無(wú)珠

as blind as a bat這個(gè)短語(yǔ)的字面意思是“像蝙蝠一樣看不見(jiàn)”的一個(gè)引申。蝙蝠眼睛看不見(jiàn)，它需要靠超聲波判別方向，從而完成捕食和飛行等一系列活動(dòng)。所以，“as blind as a bat”常用來(lái)表示某人“判斷力差”、“有眼無(wú)珠”。

【例句】
Our boss is as blind as a bat. All those obvious drawbacks have escaped him.
我們老板真是有眼無(wú)珠，連那些明顯的弊病都視而不見(jiàn)。
 

Without her help, he will act as blind as a bat.

她只要不幫他，他的判斷力就會(huì)很差。