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
Didn't we go to school together?
我们以前在一起上过学吗？
He has a piece of cake.
他有一块蛋糕。
The following Thursday, Zheng Jie rings the bell of Mr Brain's house.
下一周的星期四，郑杰按了布雷恩先生家的门铃。