phrasal verbphr vSTUDYto learn as much as you can about a subject, because you need the knowledge, for example for an examination 〔为考试等〕钻研,苦读
I have to bone up on criminal law for a test next week.
我得苦读刑法准备下个星期的考试。
Examples from the Corpus
bone up on • A really thoroughmurderer would have boned up on both subjects more intently.• So if you hate the theory so much, how come you're so boned up on it?• Bob Djurdjevic bones up onporkbellyfutures.• Talk about boning up onsorrow.• Listenerspreparing to bone up on the one-act Strauss shocker opening Oct. 18 should consider this Viennaproduction.• I spent the time before it boning up on things like Troops Out.• In his first day, Bulger began boning up onuniversity business and spoke by phone with campus chancellors.