blue pencil
noun [ S ] uk/ˌbluː ˈpen.səl/ us/ˌbluː ˈpen.səl/
修改;删除;编辑
If a person goes over a piece of writing with a blue pencil, they remove or change some of the words to improve it or make it acceptable.
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。