Udcs
abbr. Universal Decimal Classfication (图书、资料等的)国际十进分类法
🗣️ 情景例句
Stopping by Woods on a Snowy Evening
雪夜林边小驻足
In shifts
轮流
Really? If you are ill, you must see the doctor.
真的吗？如果是生病了，你得去看医生。