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
I'm going to the library to do some research.
我要去图书馆搞些调研。
An evening red and a morning grey, is a sign of a fair day.
晚霞红如火，晓色青如灰，定是晴朗天。
What colour is it?
什么颜色的？