Maintenance of system software
[计] 系统软件维护
🧩 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];
🗣️ 情景例句
And if I can be of any help,
如果我能有所帮忙的话，
Our packing charge includes $1 for the drum, which sum will be credited on return.
包装费中有1美元是包装桶的费用，此费用在桶还给我们时可退回。
The seasons of the year in England and the USA are nearly the same.
在英国和美国，一年之中的季节几乎与中国相同。