Maintenance safeguard
[计] 维护安保措施
🧩 词语组成解析
🗣️ 情景例句
What are you doing?
在做什么？
He has forgotten about his job.
他把工作忘得一干二净。
Both the police and the workmen were grateful to the student for this piece of advance information.
警察与工人都对那个学生事先通报情况表示感谢。