milestone

US /ˈmaɪl.stoʊn/
UK /ˈmaɪl.stoʊn/
"milestone" picture
1.

里程碑, 重要阶段, 重大事件

an important stage or event in the development of something

:
The discovery of penicillin was a major milestone in medicine.
青霉素的发现是医学上的一个重要里程碑
Graduating from college was a huge milestone for her.
大学毕业对她来说是一个巨大的里程碑
2.

里程碑, 路标

a stone set up beside a road to mark the distance in miles from a particular place

:
We passed the ten-mile milestone on our journey.
我们在旅途中经过了十英里里程碑
The old Roman milestones are still visible in some areas.
古罗马的里程碑在某些地区仍然可见。