staff: the right eye uncorrected visual acuity of not less than 4.9, the left eye uncorrected visual acuity of not less than 4.8.是什么意思_staff: the right eye uncorrected visual acuity of not less than 4.9, the left eye uncorrected visual acuity of not less than 4.8.在线翻译_英语_读音_用法_例句