Perfective maintenance
[计] 完善性维护
🧩 词语组成解析
a. 完成的, 完成时的\\nn. 完成时
🗣️ 情景例句
I felt differently at that time.
那时我的感觉又不一样了。
I'd like to make an appointment to see Mr. Cooper.
我想预约见库珀先生。
Good afternoon.
下午好。