VOA慢速英语:Words and Their Stories: A Final D.A.R.E.

known as被认为是，被称为
例句：Radio, television, newspapers and magazines are known as the mass media.
广播、电视、报纸和杂志被称为大众传媒。

2. Ms. Hall says the final project is based on almost two and a half million responses to more than sixteen hundred questions.

base on使建立在…基础上,立足
例句：Action should be based on solid facts.
行动应有确凿的事实为依据。

3. The questionnaire dealt with all sorts of things that have to do with our daily lives -- from time and weather and food and clothing and farming and plants and animals and religion, health, disease, honesty, dishonesty -- all the parts of our lives that we have words for.

deal with论述, 涉及
例句：This book deals with life in the United States.
这本书谈的是美国的生活情况。
do with与…有关
例句：I am not involved in it; it has nothing to do with me.
我与这事没有牵连; 它与我无关。

4. We all gathered together in the conference room and Joan showed off volume five.

show off炫耀, 卖弄
例句：He has a very expensive wristwatch and he misses no opportunity to show it off.
他有一只昂贵的手表, 他总是不放过任何机会来炫耀。