Stad
abbr. 学生小组成绩分工法（Student Teams and Achievement Divisions）
🗣️ 情景例句
I am unfamiliar with law.
我对法律不熟悉。
I'm up to my ears in work.
我忙死了。
One day a week he would spend the whole day in silence.
每周有一天他是在沉默无语中度过的。