1. theory: n

1） one or more ideas that explain how or why something happens.

　　　　　【例】He had a theory that the germs caused disease. (他的说法是这些细菌会治病。)

2） the set of general principles that a particular subject is based on.

【例】The theory and practice of education 教育理论与实践

3） an idea that you believe is true although you have no proof.

【例】I have my own theory about why he resigned.

　　　　　　　关于他的辞职原因我有自己的看法。

　　　　　【例】There is a theory that her death was an accident. 有种说法她的死是个意外。

【短语：】

in theory: 从理论上讲

In theory, anything could happen. 从理论上讲，什么事都有可能发生。

2. violent :adj

1) involving the use of physical force, with the deliberate intention of causing damage to property or injury or death to people .

【例】Teenagers are forbidden to watch violent films. (儿童禁止看暴力电影。)

2) painful and difficult to control or showing very strong and angry emotion.

【例】She had violent stomach pains. 她胃疼的厉害。

Violent opposition to the plan continues.仍有人强烈反对该计划。

3. atmosphere: (n)

1) the air around the earth or the air inside a room or other place.

【例】She doesn't like going to pubs because of the smoky atmosphere.

她不愿意去酒吧因为那里烟雾弥漫的空气。

2）（singular）the mood or feeling that exists in a place and affects the people who are