Catalyst elevator
[建] 催化剂升举机
🧩 词语组成解析
🗣️ 情景例句
He did it as a special favor.
他做这事算是特别照顾。
Would anyone like seconds?
谁要换其他的饮料？
When a student recently saw two workmen using a pneumatic drill outside his university, he immediately telephoned the police and informed them that two students dressed up as workmen were tearing up the road with a pneumatic drill.
最近有个学生看见两个工人在学校门外用风钻干活，马上打电话报告警察，说有两个学生装扮成工人，正在用风钻破坏路面。