底片旁邊的兩個洞是幹嘛用的? | 超邊緣冷知識 第47集 | 啾啾鞋
Synopsis
還記得以前拍照都會用的底片嗎? 有沒有想過為什麼底片的左右兩邊都要有一排洞呢? 它的用途是什麼? 支持啾啾 ...
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