Maintenance of equipment
[经] 设备的保养(费), 设备维修(费)
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
Oh?
噢？
I invited him ti come down, but he wouldn't.
我请他下来，但是他不肯。
Where did you put the oranges?
你把橘子放在哪了？