Cavitary
腔的, 空洞的
🗣️ 情景例句
I major in English and minor in French.
我主修英语，副修法语。
Custom is a second nature.
习惯是第二天性。
At night, when you really wish to go to sleep, you rarely manage to do so.
到了夜晚，你真想睡了，却很难入睡。