For 18 years he had a columnin Newsweek.

18年来，他保持为《新闻周刊》撰写专栏文章。

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They have been married for 18 years.

他们结婚已经18年了。

youdao

Russia has been negotiating for 18 years.

俄罗斯已经为世贸一事，同各方协商了18年之久。

youdao

It is good to know the Environmental Film Festival has been set up for 18 years.

VOA: special.2010.04.23

She was awarded tenure in 1938, denied a professorship for 18 years, and when she presented her Ph.D thesis she was the one that determined that the sun is made dominantly of hydrogen, not ion, the way most of the old goats thought.

她是在1938年被授予长期聘用资格，拒绝接受教授职位18年，她在她的博士论文写到,她就知道,太阳主要是由氢组成的，不是那些老教授认为的那样它是由离子构成的。

麻省理工公开课 - 固态化学导论课程节选

And then that one's got an 18 on it, so I had it for like two years now.

然后那个上面有一个数字18，所以我拥有它两年了。

忘不了的生日礼物 - SpeakingMax英语口语达人

She has worked for the same company for 18 years and has a great career.

FORBES: Readers Say

Zipper Interactive made games for 18 years and definitely left its mark on the game industry.

FORBES: Sony Shutters SOCOM Seattle Studio Zipper Interactive

For 18 years ending in 1995, the team sold out every single home game.

FORBES: Magazine Article