communism common共同的 【根】mun＝service（服务）
A theoretical economic system characterized by the collective ownership of property and by the organization of labor for the common advantage of all members.
n. 共产主义

communion
The act or an instance of sharing, as of thoughts or feelings.
Religious or spiritual fellowship.
A body of Christians with a common religious faith who practice the same rites; a denomination.
Communion Ecclesiastical. The sacrament of the Eucharist received by a congregation. The consecrated elements of the Eucharist. The part of the Mass or a liturgy in which the Eucharist is received.
n.
1. 共享， 共同参与
2. 亲密交谈； 交流； 交际； 友谊
3. 教友； 教会
4. ［Communion ］【宗】圣餐式； 领圣餐

communicate -ic 形容词字尾 ＋ -ate, 动词字尾，表「使～」
To convey information about; make known; impart: communicated his views to our office. To reveal clearly; manifest: Her disapproval communicated itself in her frown.
To spread (a disease, for example) to others; transmit: a carrier who communicated typhus.
To have an interchange, as of ideas.
To express oneself in such a way that one is readily and clearly understood:
vi. 通讯，传达；相通；感染
vt. 传达；感染；显露；显示

例句：
He communicated colds to the rest of his family.
他把感冒传染给了家人。
He had no way to communicate with his brother.
他没有办法与他兄弟联系。

communicative
Inclined to communicate readily; talkative.
Of or relating to communication.
adj. 交际的；爱说话的，健谈的；无隐讳交谈的

例句：
Shopping-bag ladies are not very communicative and take general conversation as an intrusion.
携购物袋的女士们不大爱说话,她们把一般的交谈视为打扰。

uncommunicative
Not disposed to be communicative
adj.不爱说话的, 寡言的, 拘谨的; 隐诲的

community
A group of people living in the same locality and under the same government. The district or locality in which such a group lives.
A group of people having common interests: the scientific community; the international business community. A group viewed as forming a distinct segment of society: the gay community; the community of color.
Similarity or identity: a community of interests. Sharing, participation, and fellowship.
Society as a whole; the public.
Ecology. A group of plants and animals living and interacting with one another in a specific region under relatively similar environmental conditions. The region occupied by a group of interacting organisms.
n. 社区；[生态] 群落；共同体；团体

immune
词汇起源
[Date: 1800-1900; Language: Latin; Origin: immunis, from munis 'ready for service']

Not subject to an obligation imposed on others; exempt: immune from taxation; immune from criminal prosecution.
Not affected by a given influence; unresponsive: immune to persuasion.
Immunology. Of, relating to, or having resistance to infection by a specific pathogen.
A person who is immune.
adj. 免疫的；免于……的，免除的
n. 免疫者；免除者

耶鲁公开课 - 生物医学工程探索课程节选
We're going to talk about how they're prepared, but it's a preparation that is intended to stimulate your immune system.
我们会讲它们是如何做准备的,它通过刺激你的免疫系统来进行准备。

immunity
The quality or condition of being immune.
Immunology. Inherited, acquired, or induced resistance to infection by a specific pathogen.
Law. Exemption from normal legal duties, penalties, or liabilities, granted to a special group of people: legislative immunity. Exemption from legal prosecution, often granted a witness in exchange for self-incriminating testimony.
n. 免疫力；豁免权；免除

immunize
To render immune.
To produce immunity in, as by inoculation.
Law. To grant immunity from prosecution
vt. 使免疫；赋予免疫性