milestone 'mailstәun
释义
n. 里程碑, 里程石, 里程标
英文释义
n. stone post at side of a road to show distances
n. a significant event in your life (or in a project)
词形变化
复数: milestones
BNC词频排名: 11,721 | 当代语料库词频排名: 9,040