Domain of a function
函数的（定义）域
🧩 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
No, I could never agree to sign this contract.
不，我无论如何也不会签这份合同。
Better master one than engage with ten.
精通一事胜于会十事。
For the first time in his life, he became the proud owner of a bed which had springs and a mattress.
他平生第一次自豪地拥有了一张既有弹簧又带床垫的床。