Occluder

US

・

UK

A1 初級
n.名詞光線限制器 ； 遮光板

影片字幕

為什麼眯眯眼能幫助你更好地看清事物？ (Why Does Squinting Help You See Better?)

04:39為什麼眯眯眼能幫助你更好地看清事物？ (Why Does Squinting Help You See Better?)
B1 中級

Hilco HX-400瞳孔計概述 (Overview of the Hilco HX-400 Pupilometer)

06:38Hilco HX-400瞳孔計概述 (Overview of the Hilco HX-400 Pupilometer)
A2 初級