n.[C]

1. 主题；题目；题材
   He has read many books on the subject.

   他看过许多关于这一方面的书。

2. 话题；（议论的）对象
3. 科目，学科
   English is my favorite subject.

   英语是我最喜欢的学科。

4. 【语】主语
5. （君主国）国民，臣民
6. 原因；缘由；理由[（+of/for）]
7. 接受实验者，实验品，实验对象
8. 【音】主题，主旋律
9. 【哲】（意识的）主体；主观意识

a.

1. 易受……的；易患……的[F][+to]
   My mother is very subject to headaches.

   我母亲动不动就头痛。

   Japan is subject to earthquakes.

   日本常发生地震。

   The prices for steel are subject to change.

   钢材价格随时可能有变动。

2. 以……为条件的；须经……的[F][+to]
   Our plans are subject to the weather.

   我们的计划取决于天气如何。

3. 隶属的，受支配的[Z][（+to）]
   While in this country you are subject to its laws.

   你们在这个国家就要受其法律的约束。

vt.

1. 使隶属；使服从[（+to）]
   How can you subject her will to your own?

   你怎么可以要她服从你的意愿呢？

2. 使蒙受；使遭遇[H][+to]
   Her conduct subjected her to public ridicule.

   她的行为使她受众人嘲笑。

   This country was once subjected to foreign rule.

   这个国家一度曾受外国统治。

   The suspect was subjected to cross-examination at the police station.

   嫌疑犯在警察局受到盘问。

3. 提供；呈交

n.

1. a person or thing that is being discussed or dealt with or that gives rise to something.
   ▸Logic  the part of a proposition about which a statement is made.
   ▸a person who is the focus of scientific or medical attention or experiment.
2. a branch of knowledge studied or taught in a school, college, or university.
3. Grammar  a noun or noun phrase about which the rest of the clause is predicated.
4. a member of a state owing allegiance to its monarch or supreme ruler.
5. Music  a theme of a fugue or of a piece in sonata form; a leading phrase or motif.
6. Philosophy  a thinking or feeling entity; the conscious mind or ego.
   ▸the central substance or core of a thing as opposed to its attributes.

adj.

1. likely or prone to be affected by (something bad).
2. dependent or conditional upon.
3. under the control or authority of.

adv.

v.

1. cause or force to undergo.
2. bring under one's control or jurisdiction, typically by force.