1A stone set up beside a road to mark the distance in miles to a particular place.
2A significant stage or event in the development of something.
这次演讲被赞为种族关系的里程碑。
2An action or event marking a significant change or stage in development.
英汉双解词典包含464360条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。