Theory of function
[计] 函数论
🧩 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
But you had to be good at math.
但是你数学一定很好。
Let me do some research on this and get back with you tomorrow.
请让我查查看，明天再给你答复。
The guards couldn't have been watchig very carefully.
警卫不可能一直认真地查看。