The distribution and determinants of very low circulating troponin t levels, as well as their association with cardiovascular events, in such patients are unknown.

此类患者血液中低肌钙蛋白t水平的分布和决定因素及其与心血管事件的关系尚未可知。

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The fuzzy dynamic observer diagnosis method is proposed for the T-S fuzzy system with unknown inputs and multiple faults.

研究了T S模糊系统中存在未知输入、多重故障时的诊断问题，提出了基于动态模糊观测器的诊断方法。

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The man, whose nationality was unknown, was wearing a pink T-shirt and dark shorts, a beige baseball cap and sunglasses.

这名男子穿着粉色体恤和黑色短裤，戴着米色棒球帽以及太阳镜。

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"You can have that test, but it can't be an exclusive test because of the nature of the patent laws which are to protect new and unknown inventions."

VOA: special.2010.07.16

The details--like which of the '90s cast will reemerge, if any--remain unknown, but that hasn't stopped the public from buzzing.

FORBES: Buzz - Forbes.com

That said, if we assume the as yet unknown price isn't stereotypically high -- and that audiophiles don't mind a big, potentially noisy desktop as a home theater PC -- the Hi-Fi Z77x could be a treat for those who want to wring every nuance out of music and movie soundtracks.

ENGADGET: Biostar Hi-Fi Z77X gives audiophiles 7.1-channel analog sound, overpriced cables thankfully optional

Everyone is terrified of the unknown, but most of us don't want to return to a time when minorities were openly discriminated against.

NPR: 'I'm Gay': NBA Player Jason Collins Breaks Barrier