Perforated cylinder
[化] 多孔转鼓
🧩 词语组成解析
v. 穿孔于, 在…上打眼( perforate的过去式和过去分词 ); （在纸张等上）打齿孔[孔眼线]
🗣️ 情景例句
when Molly gave him the injection.
Molly给他打针时。
Teacher. He is teaching.
老师。正在教书。
It was a lazy, breezy autumn afternoon.
这是一个懒散的，起风的秋日下午。