重点讲解：
1. come away with （带着某种感觉或印象）离开；
We came away with the impression that all was not well with their marriage.
我们离开时有一种印象：他们的婚姻并不十分美满XX^j6KXjPX7C6u6。
2. look at 考虑；研究；
The examples we will look at have quite different emphases.
我们将要观察的例子所强调的重点很不相同1xk@b[WZ#g@|hoE。
3. a variety of 各式各样；多种多样；
The test is used to diagnose a variety of diseases.
此项化验可用于诊断多种疾病2qf8[_rGQx,W!4i!BDJM。
4. because of 因为；由于；
We have had to raise our prices because of rising costs.
因为成本日益上涨，我们不得不提高价格msdCa0UyOPA-%。