The web has dramatically changed the software industry over the past 15 years.

在过去的15年中,网络极大的改变了软件业。

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We need to consider what has changed in the environment over the past 15 years.

我们需要考虑在过去的15年里环境已经发生里那些变化。

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Attitudes to student-teacher relationships have hardened over the past 15 years.

15年来，人们对于师生关系的态度越来越强硬。

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Although no cure has been discovered yet, Dr.Sabbagh says significant progress has been made over the past 15 years.

VOA: standard.2009.12.04

Over the past twenty years, we've generated 15.6% per annum return, but that headline number obviously has a lot to do with the equity orientationof the portfolio but doesn't describe the importance of the diversification.

过去20年间,我们的年收益率达到15.6%,虽然媒体头条报道这一收益率,总强调与投资组合的股权导向有很大关系,但没有描述出投资多元化的重要性

耶鲁公开课 - 金融市场课程节选

As China's economy has grown 10-fold over the past 15 years, the country's environment has been degrading.

VOA: standard.2010.04.07

Jones has been mostly been heard, not seen, on film over the past 15 years.

FORBES: Morgan Freeman Tops Our List Of The Most Trustworthy Celebrities

He has sold more than 90 million pairs of the shoes over the past 15 years.

FORBES: Shaquille O'Neal Was A Marketing Visionary

Over the past 15 years growth and value funds posted almost identical performance of around 15%.

FORBES: The Wal-Mart of mutual funds