Beavering
v. （海狸似地）拼命工作( beaver的现在分词 ); 忙于（某事）, 勤奋工作
🗣️ 情景例句
if, and I repeat,
只要， 我重复一遍，
The student is busy studying math.
这个学生忙于研究数学。
And I want a large box of chalk, too.
我还要一大盒粉笔。