Definition
to thoroughly study or review a subject with a specific purpose in mind
努力学习；专注地学习
Before the exam, she decided to bone up on all the materials.
在考试之前，她决定努力学习所有的材料。
He needs to bone up on this topic because his report is due soon.
他需要努力学习这个主题，因为他的报告很快就到期了。
To excel in the interview, she spent several days boning up on the company's history.
为了在面试中表现出色，她花了几天时间努力学习公司的历史。