Eyelid that lacks a fold or crease above the lash line, often referred to as an epicanthic fold; the opposite of [[双眼皮|雙眼皮|shuang1 yan3 pi2]]

(Taiwan) single-lens reflex camera; uses the same lens for viewing and taking photos to avoid parallax; also called [[单反相机|單反相機|dan1 fan3 xiang4 ji1]] in Mainland China