n. 主题；被试者；学科；科目（subject的复数）

n the subject matter of a conversation or discussion

n something (a person or object or scene) selected by an artist or photographer for graphic representation

n a branch of knowledge

n some situation or event that is thought about

n (grammar) one of the two main constituents of a sentence; the grammatical constituent about which something is predicated

n a person who is subjected to experimental or other observational procedures; someone who is an object of investigation

n a person who owes allegiance to that nation

n (logic) the first term of a proposition

v cause to experience or suffer or make liable or vulnerable to

v make accountable for

v make subservient; force to submit or subdue

v refer for judgment or consideration