1、刻苦学习
... grind away 磨掉[光] grind away at 加紧用功; 刻苦学习 grind away for 加紧用功; 刻苦学习 ...
2、加紧用功
... grind away 磨掉[光] grind away at 加紧用功; 刻苦学习 grind away for 加紧用功; 刻苦学习 ...
grind away at duties努力工作
grind away at English studies刻苦攻读英语;刻苦攻读
grind away at one's English拼命苦学英语
grind away at one's studies翻译;刻苦学习