I discovered that she had another side to her, previously hidden.

我发现了她的另外一面，以前我们不曾看到的一面。

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He unfurls his previously hidden carrot-orange crest and streaks out at her, wings askew, then darts back to hide again.

他打开先前收起的橙黄色羽冠，斜张着翅膀，像一道闪电向雌鸟冲去，然后迅速撤回，把自己藏了起来。

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Adobe LiveCycle Reader Extensions: Enables organizations to activate previously hidden functionality within the free, ubiquitous Adobe Reader.

Adobe LiveCycle Reader Extensions：允许组织激活在免费的，普遍存在的Adobe Reader内部先前隐藏的功能。

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Studying teeth with state of the art technology is helping to unlock previously hidden secrets about the Neanderthals' lifestyle.

BBC: How scientists recreated Neanderthal man

Within this data lie valuable patterns and information, previously hidden because of the amount of work required to extract them.

FORBES: Volume, Velocity, Variety: What You Need to Know About Big Data

But environmental campaigners fear nuclear disposal experts may yet return to the previously hidden list as they seek a long-term solution to the radioactive waste issue.

BBC: NEWS | UK | Scotland | Nuclear waste sites list revealed