1) 翻译：这项最新报告研究的是英语流利度和收入的相关性。
The newest report concerns the correlation between English proficiency and income.
2) The bulk of the book concerns captain blue bear's adventures.
3) 其他积累：
Chapter 2 concerns itself with the methodological difficulties.
第二章讲的是研究方法上的难点。
The bulk of the book concerns Sandy's two middle-aged children...
书中主要描写桑迪的两个已到中年的孩子。
