Cách sử dụng
The expression "bone up on" means to study or review something in detail in order to improve one's knowledge or skills on a particular subject. It can be used in various contexts such as before an exam, a job interview or before starting a new job or project. For example, "I need to bone up on my grammar before the English test next week" or "I'm going to bone up on the latest market trends before the job interview".