重点讲解：
1. attribute to 把…归因于；把…归咎于；
The coach attributed the team's victory to training and practice.
教练把球队的胜利归功于平时的训练。
2. be immune to (对疾病)免疫的,有免疫力的；
He is immune to chickenpox, he had it as a child.
他对水痘免疫，他小时候就得过了。
3. scale down 缩小；缩减；减弱；
After receiving bad news in the year-end financial report, we were forced to scale down next year's budget.
在得知年终财务报告的坏消息后，我们被迫缩减下一年的预算。
4. in attendance 到（某地）；出席（某活动）；
Many Metropolitan board members with ties to Wall Street or major American companies were in attendance.
许多与华尔街或美国大公司有关系的大都会艺术博物馆董事会成员出席了这次晚宴。