"She was digging away at her math homework" "Lexicographers drudge all day long"
He was the common drudge..to make, correct, or review the Latine Sermons.
All I am is a servant,..a household drudge.
My father had been out..enjoying himself while she drudged at home.
Drudging sullenly at subjects I despised.
牛津高阶第八版
美国韦氏词典
Dictionary.com
Free Dictionary
维基百科 (自由的百科全书)