(a) person or thingthat is being discussed or described (in speech or writing),or represented, eg in a painting; topic; theme 主题; 对象: an interesting subject of conversation 有趣的话题 * choose a subject for a poem, a picture, an essay, etc 确定诗﹑ 画﹑ 文章等的主题 * (fml 文) What did she say on the subject of (ie about) money? 在钱的问题上她是怎麽说的? (b) branch of knowledge studied in a school, etc 学科; 科目: Physics and maths are my favourite subjects. 物理和数学都是我喜欢的科目. 
person or thing being treated in a certain way or being experimented on 以某种方式处理或实验的人或事物: We need some male subjects for a psychology experiment. 我们需要几个男子作心理学实验对象. 
~ for sth person or thing that causes a specified feeling or action 引起某种情感或行为的人或事物: a subject for pity, ridicule, congratulation 怜悯﹑ 取笑﹑ 祝贺的对象 * His appearance was the subject for some critical comment. 他的外表受到一些人的议论. 
(grammar) (a) word(s) in a sentence naming who or what does or undergoes the action stated by the verb, eg the book in The book fell off the table 主语（动作的主体, 如在The book fell off the table一句中, the book是主语）. Cf 参看 object1 5. (b) word(s) in a sentence about which sth is stated, eg the house in The house is old 主语（句子中陈述的对象, 如在The house is old一句中, the house是主语）. Cf 参看 predicate1. 
any member of a State apart from the supreme ruler 臣民; 国民: I am French by birth and a British subject by marriage. 我按出生是法国人, 因结婚而成为英国公民. =>Usage at citizen 用法见citizen. 
(music 音) theme on which a piece of music is based 主题; 主旋律. 
(idm 习语) change the subject => change1.# `subject-matter n [U] content of a book, speech, etc, esp as contrasted with the style （书﹑ 讲话等的）内容, 题材（尤与体裁相对）: Although the subject-matter (of her talk) was rather dull her witty delivery kept the audience interested. 尽管（她讲的）内容有些枯燥, 但由於她善於表达, 大家仍听得津津有味.