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
African athletes are good at track and field events.
非洲选手擅长田径项目。
Look before you leap; see before you go.
三思而行。
Though he is young, he knows a lot.
尽管小，他懂得多。