重点讲解：
1. talk about
讲；谈论；
eg. They always talk about computers.
他们总是谈论有关电脑的事情。
eg. The lesson of that was that we have to talk about it.
我们吸取的教训是，我们必须开诚布公的谈论这个问题。
2. spend some time (in) doing sth.
花费时间做某事；
eg. We don't spend that much time thinking about search.
我们没有花那么多时间去考虑搜索。
eg. We spend a great deal of time putting on make-up to help perfect our look.
我们每天花费大量时间化妆来使我们的面容更加美丽。
3. a couple of
两个；几个；
eg. So we did a couple of things to change this.
因此我们做了几件事以改变这种情况。
eg. Once I faced that fact, I solved the problem in a couple of days.
而一旦我正视那个事实，我在其后的一段时间里就将这个问题解决了。
