nsbaCOCA⁹⁶⁸⁷⁷ 基本例句 National School Boards Association 国家学校部协会 Information from this year's study is compared with studies from past NSBA surveys, providing a wealth of useful trend information. 将该年度调查获得的信息与以往 NSBA调查结果比较，能得到大量有用的趋势性信息。 blog.sina.com.cn