Maintenance of programs
[计] 程序维护
🧩 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];
n. 程序, 程序集；所有程式（program的复数）
🗣️ 情景例句
When was your last day off?
上次休假是在什么时候？
Without practice, hopes will be reduced to zero.
没有实践，希望会化为乌有。
I was standing at the back, so I couldn't see very well.
我站在后面，看不清。