VOA慢速英语:President Obama States Support for Same-Sex Marriage

talk about 谈论
例句：What are they talking about?
他们在谈什么?

2. But, the fact is, the American people are focused on our economy, and they are asking the question: where are the jobs?

focus on  (使)集中于
例句：He focused his eyes on me.
他注视着我。

3. At a certain point, I just concluded that for me personally, it is important for me to go ahead and affirm that I think same-sex couples should be able to get married.

go ahead 继续下去,取得进展
例句：He's going ahead fast.
他进展很快。
be able to do 能够做某事（强调通过努力而获得的能力）
例句：He is able to lift a very heavy weight. 
他能举很重的份量。