n. 研究；学习；学业（study的复数）

n a detailed critical inspection

n applying the mind to learning and understanding a subject (especially by reading)

n a written document describing the findings of some individual or group

n a state of deep mental absorption

n a room used for reading and writing and studying

n a branch of knowledge

n preliminary drawing for later elaboration

n attentive consideration and meditation

n someone who memorizes quickly and easily (as the lines for a part in a play)

n a composition intended to develop one aspect of the performer's technique

v consider in detail and subject to an analysis in order to discover essential features or meaning

v be a student; follow a course of study; be enrolled at an institute of learning

v give careful consideration to

v be a student of a certain subject

v learn by reading books; I must hit the books now"

v think intently and at length, as for spiritual purposes