重点讲解：
1. map out
设计；计划；规划；安排；
eg. She mapped out her ideas on the new project.
她详细提出了对新项目的意见。
eg. We spent weeks mapping out our holiday.
我们花了好几个星期筹划如何度假。
2. in general
总的来说；总体上来看；大体上；
eg. In general, machinery has replaced most hired labor.
总的说来，机械已经代替了大部分雇佣劳动力。
eg. I was in general agreement with this strong policy.
总的说来,我同意这种强硬的政策。
3. suffer from
（因疾病或处于其他不利境地而）受苦，受难，受折磨；
eg. Niwano's business began to suffer from neglect.
尼瓦诺的生意因为疏于管理而开始出现问题。
eg. He is suffering from nervous tension.
他正受神经紧张之苦。
4. major in
主修…的学生，…专业的学生；
eg. I major in engineering, but this machine is hard to handle.
虽然我学的是机电专业，但这机器还是很难修。
eg. He majored in international commerce in college.
他大学时的专业是国际贸易。
5. compared with
与…相比；和…比起来；
eg. Compared with them,we still have a long way to go.
和他们比起来，我们还有很大差距。
eg. They considered this speech mild compared with his former ones.
他们认为他这次的讲话和过去的讲话相比起来还算是温和的。
6. on average
平均起来；按平均值；
eg. There is very little rain here, merely 60 mm in a year on average.
这儿雨水极少，平均每年只有60毫米。
eg. On average, three persons lose their jobs every day in this town.
平均来说，这个小镇每天有三个人失业。
7. be aimed at doing sth.
旨在；目的是；
eg. This self-massage is aimed at promoting longevity.
这种自我按摩的目的是延年益寿。
eg. The measures were aimed at shoring up the economy.
采取这些措施，目的在于稳定经济。
