重点讲解:
1. at the same time 同时;与此同时;
It's impossible to get everybody together at the same time.
让所有人同时聚在一起是不可能的 。
2. for example 举例;例如;
Great men have often risen from poverty--Lincoln and Edison, for example.
你什么也不必担心 。
3. a number of 一些;大量;
The research begs a number of questions.
研究绕过了一些问题 。
4. happen to 碰巧;发生于;
I happen to be an aficionado of the opera, and I love art museums.
碰巧我是个歌剧迷,而且我爱去艺术博物馆 。