swot up on
US /swɑt ʌp ɑn/
UK /swɒt ʌp ɒn/
短语动词
恶补, 刻苦学习
to study something very hard, especially for an examination
示例:
•
I need to swot up on my history before the test.
考试前我需要恶补历史。
•
She spent the whole weekend swotting up on biology.
她整个周末都在恶补生物学。