Maintenance management
[经] 维修(保养)管理
🧩 词语组成解析
🗣️ 情景例句
... and I do need some advice on a difficult problem.
……我的确有一个难题要请教你。
He alone is poor who does not possess knowledge.
没有知识，才是贫穷。
Look! It's inside another pot. What was that pot used for?
“瞧！还是大壶套小壶呢。有什么用途？”