Definition
Having very poor eyesight; unable to see well.
形容視力極差。
He's as blind as a bat without his glasses.
他沒有眼鏡就完全看不清楚。
I'm as blind as a bat in the dark; I can't see anything.
我在黑暗中像蝙蝠一樣看不見；我什麼都看不見。
Her nearsightedness is so severe that she's as blind as a bat without her glasses.
她的近視非常嚴重，沒有眼鏡就像蝙蝠一樣看不見。