重点讲解：
1. be known as
称为；叫做；
eg. Mr.Johnson was known as a walking dictionary.
约翰逊先生被称作一本活字典。
eg. He was known as an ever-victorious general.
他被誉为常胜将军。
2. together with
连同…一起；还有；加之；
eg. She went into the ravine, together with the jewels.
她连同那些珠宝一起掉进峡谷里了。
eg. I wish you to go there together with me.
我希望你和我一起去那里。
3. a number of
若干；许多；
eg. I subscribe to a number of journals concerned with my subject.
我订了多种与我的专业有关的杂志。
eg. A number of papers protruded from his pocket.
几份文件从他口袋里漏出来。
4. a range of
（同类事物的）一系列，一连串；
eg. A wide range of colours and patterns are available.
各种颜色和样式都有。
eg. The two men discussed a range of issues.
那两个人讨论了一系列问题。
5. aim to do sth.
致力于；旨在；以…为目标；
eg. He aims to encourage mutual understanding.
他的目的在于增进相互了解。
eg. They are aiming to reduce unemployment by 50%.
他们正力求使失业人数下降 50%。
