重点讲解：
1. according to 据…所说；按…所载；
According to a report in The British Medical Journal, children with higher IQs are more likely to grow up to be vegetarians.
根据《英国医学期刊》中的一篇报告，高智商的小孩将来很可能是素食者vlwRLcYD2*7。
2. per capita 人均的；按人计算的；
They have the world's largest per capita income.
他们的人均收入居世界之首K2xK=,FcNB@mAqd。
3. on average 平均起来；按平均值；
On average, those in their thirties do 7.4 hours a week, equal to 43 days a year at their desks without being paid a penny.
平均来看，30多岁的单身女性每周无偿加班7.4个小时，相当于一年有43天的工作没有任何报酬@1(,k!+X1v0i+Ce~c。
4. serve as 用作；可当…使用；充作；
Knowledge is going to have to serve as the fulcrum of progress or provide the key to a decent survival.
知识必将成为发展的支柱，也将是改善生存环境的关键所在,n!@Ni&*_4。