milestone

里程碑、重要阶段、重大事件

Learning to walk is an important milestone in a child's development.

学会走路是儿童发展上的重要里程碑。

里程碑、里程标石

An old stone milestone still stands beside the country road.

一块古老的里程标石仍立在那条乡间小路旁。

划时代的、具里程碑意义的仅用于名词前

The court's milestone ruling changed how these cases are handled.

法院这项划时代的判决改变了这类案件的处理方式。