Dear Roger,I encountered the expression "blue dog" in a newspaper. The whole sentence is "Don't think of a blue dog." I consulted an American, but he told me that he only knows "blue moon". Could you the expression for me? Thanks a lot!
21世纪报社版权所有，未经书面授权，禁止转载或建立镜像。 主办单位：中国日报社 Copyright by 21st Century English Education Media All Rights Reserved 版权所有 复制必究 京ICP备13028878号-12京公网安备 11010502033664号
京公网安备 11010502033664号
