microfilm

n. /ˈmaɪkroʊfɪlm/ C1

微缩胶卷

Film on which tiny photographs of documents or newspapers are stored.

仙境例句

In her sister's strange dream, a whole book fit on microfilm no bigger than a stamp.

在姐姐奇怪的梦里，一整本书都装进了一张比邮票还小的缩微胶片。