1. antagonist /ænˈtægənɪst/

-- 1. one who is against or contends with another in a struggle, fight or contest; opponent; adversary; foe

2. main opponent of the principle character in a play, novel or story

Japan was our antagonist in World War II.

日本在第二次世界大战中是我们的敌人。

Brutus is the main character in William Shakespeare's Julius Caesar and Antony is his antagonist.

布鲁特斯在威廉·莎士比亚的作品《尤利乌斯·凯撒》中是主角，而安东尼是与他对立的角色。

 

2. antibiotic /ˌæntibaɪˈɒtɪk/

-- substance obtained from tiny living organisms that works against bacteria 

The antibiotic penicillin stops the growth of bacteria causing pneumonia, tonsillitis and certain other diseases.

抗生素青霉素阻止了肺炎细菌、扁桃体细菌还有其他某些疾病细菌的生长繁殖。

 

3. antibody /ˈæntibɒdi/

-- substance in the blood or tissues that works against germs or poisons produced by germs

When the body is invaded by foreign agents such as bacteria or viruses, the antibodies go to work against them.

当身体被外来的作用物如细菌、过滤性病毒侵入，抗体就会发生作用去抵抗他们。

 

4. antidote /'æntɪdəʊt/

-- remedy that acts against the effects of a poison

By telephone, the physician prescribed the exact antidote to be given immediately to the poison victim.

医生通过电话立即给那位中毒的受害者开了正确的解毒剂。

 

5. antipathy /æn'tɪpəθɪ/

-- feeling against; distaste; repugnance; dislike; enmity

A few of the neighbors have an antipathy to dogs, but most are fond of them.

有一些邻居很讨厌狗，但大多数都很喜欢。

 

6. antiseptic /ˌæntɪ'septɪk/

-- (literally, "against decaying") substance that prevents infection

The wound was carefully washed; then an antiseptic, tincture of iodine, was applied.

伤口被仔细地清洗了，然后涂上消毒剂碘酒。

 

7. antitoxin /ˌæntɪ'tɒksɪn/

-- substance formed in the body as the result of the introduction of a toxin(poison) and capable of acting against the toxin

We are injected with diphtheria antitoxin produced in horses because the antitoxin manufactured by our bodies may not be enough to prevent diphtheria.

我们注射从马身上制造出来的白喉抗毒素，因为我们体内的抗毒素可能不足以抵御白喉。

 

8. antonym /ˈæntənɪm/

-- word meaning the opposite of another word; opposite

"Temporary" is the antonym of "permanent".

“暂时”是“永久”的反义词。