Microdot
a. 微粒的\\nn. 微粒照片, 小粒迷幻药
📖 牛津释义
microdot
n
photograph, usu of secret documents, etc, reduced to the size of a dot 微粒照片（缩小至颗粒大小的照片, 通常为密件）.
🗣️ 情景例句
Thank you.
谢谢你。
Man is a tool-using animal.
人是用器之兽。
and even described the way they were done up in bundles.
还说了报纸捆扎的情况。