短语讲解：

1. They talk about people shooting, but they don’t talk about the positive things that's out here goin on.

talk about 讨论，谈论
例句：He went on to talk about his accident.
他接着谈到了他的意外事故。

2. Ms. Dehmer says the store has given a total of more than $100,000 to businesses affected by the rioting.

a total of 总数为
例句：Their expenses reached a total of 1, 000 pounds.
他们的花费总计1000英镑。

3. The reason that LA hasn’t exploded again is because we are aware of the past.

be aware of 知道，意识到
例句：It is important to be aware of what you drink.
注意喝什么很重要。

4. Officers who work in the neighborhood are black, Hispanic and Asian in addition to white.

in addition to 除…之外
例句：In addition to French, he has to study Japanese.
除了法语外,他还得学日语。