boned up on

• v. 赶紧学会(专攻；专门钻研)

boned up on的用法和样例：

例句

1. If you are going to get a job in Japan, you had better bone up on the language.
   如果你打算在日本打工，你最好刻苦学习日语。
2. I must bone up on my French before we go to Paris.
   在我们去巴黎之前，我必须刻苦学习法语－。