短语讲解：

1. Obama says he would like to take a Saturday morning walk where he could run into a friend and have a chat.

run into 快速进入…; （使） 碰撞
例句：We saw them run into a cinema.
我们看见他们跑进一家电影院。

2. He says, "Anonymity is not something you think about as being valuable.

think about 考虑…; 捉摸…
例句：Even now when I think about it I feel pain in my heart.
就是现在想起来我心里都感到难受。