It served as a milestone in making bilateral talk between North Korea and the United States possible,"

VOA: standard.2009.12.30

So I took this little interaction as sort of progress milestone in the proliferation of internet video.

所以我把这次交流作为一种网络视频,增殖过程中的里程碑。

麻省理工公开课 - 媒体、教育、市场课程节选

"And today I return to Columbus to mark a milestone on the road to recovery: The 10,000th project launched under the Recovery Act.

VOA: standard.2010.06.18

But it did have one small milestone for a longtime admirer of the band.

FORBES: The E Street Band Sound and Light Show

Additional milestone payments and a potential future public offering could yield triple that take.

FORBES: Magazine Article

This marks the second time in three months that Apple has celebrated an iTunes milestone.

CNN: Apple's App Store hits 50 billion downloads