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
Nowadays many TV programs need parental guidance.
现在许多电视节目需要在家长指导下观看。
Perhaps he isn't here.
也许他不在这儿。
How many of you are making the trip?
你们有多少人去旅行？