Domain of validity
[计] 有效域, 有效范围
🧩 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
He's busy preparing for class.
他忙着准备功课。
My son wants to get married in June.
我的儿子想要在6月结婚。
Yes, I'm afraid so. It's getting late, and we have to be up early in the morning.
恐怕是这样。天渐渐变晚了。清晨我们得早起。