Operational maintenance
[计] 运行维护
🧩 词语组成解析
🗣️ 情景例句
Well, she'll be here later.
来 她会晚一点。
How are you doing these days?
这些日子你怎么样？
The little baskets were empty and the ground was covered with pieces of paper, cigarette ends, old tyres, empty bottles and rusty tins.
废物筐是空的，而满地都是纸片、烟头、旧轮胎，空瓶子和生锈的空罐头盒。