medical instrument consisting of a magnifying lens and light; used for examining the external ear (the auditory meatus and especially the tympanic membrane)
造句
用作名詞(n.)
Dr. McEwan fretted irritably as he withdrew the otoscope from old Rudy\\\'s ear. 麥克文又憤怒，又煩躁地把耳鏡從老魯迪的耳朵抽出來。