A Bell Labs team began developing a research project called "s" back in the mid - '70s.

贝尔实验室的一个开发团队自20世纪70年代中期就开始进行一项名为“S”的研究项目。

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When the entire industry moved to Web development back in the mid-1990s, software developers were ecstatic.

当20世纪90年代中期整个行业转向Web开发时，软件开发人员们欣喜若狂。

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The difference is that X.org has a cleaner separation of policy and mechanism, and maintains backwards compatibility with applications dating back to the mid 1980s.

不同之处在于，X.org对于策略和方法有一个更加清楚的区分，同时保持了对1980年代中期以来的应用程序的兼容。

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Election officials here are cautioning that previously announced dates to post official returns in mid-September may be pushed back.

VOA: standard.2009.08.23

So we'll come back and revisit the idea that repeating an interaction may allow you to obtain cooperation, but we're not going to come back to that until after the mid-term.

我们以后再继续探讨为什么,重复能够促成合作,我们在后半学期再探讨这个问题

耶鲁公开课 - 博弈论课程节选

he picks up the pace on the first single from Never Going Back, with "Mid-Life Chrysler."

VOA: standard.2009.08.04

My technical indicators triggered a sell signal on February 19, almost exactly at that peak, but had me and my subscribers back on a buy signal in mid-August and back into a 20% position in the gold etf GLD.

FORBES: Gold Struggles To Get Its Groove Back

Villa, though, miss the chance to add to their back-to-back victories and remain in mid-table.

BBC: SPORT | Football | Premier League | Man City 1-0 Aston Villa

Overall the ten- and 20-city Case-Shiller indices are merely back to mid-2003 levels.

WSJ: Is Your Home A Good Investment?