To do this, ask the patient to cover one eye, hold the card about 14 inches away from his eyes, and read aloud the smallest print possible.是什么意思_To do this, ask the patient to cover one eye, hold the card about 14 inches away from his eyes, and read aloud the smallest print possible.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句