The contract was awarded to a previously unknown company.
该合同给了一家先前不知名的公司。
A previously unknown extremist group has said it carried out Friday's bomb attack.
一个先前未知的极端分子组织声称其实施了周五的炸弹袭击。
The scientist confirmed the snake was a previously unknown species after conducting a genetic analysis of tissue samples.
在对组织样本进行基因分析后，科学家确认这条蛇是一个此前不为人知的物种。
The team was led by Dr. Graham Reynolds, from Harvard University, the scientist confirmed the snake was a previously unknown species after conducting a genetic analysis of tissue samples.
该研究小组由哈佛大学的格雷厄姆·雷诺兹博士带队，这位科学家在对组织样本进行基因分析后，确认这条蛇是一个此前不为人知的种类。
The team was led by Dr. Graham Reynolds, from Harvard University, the scientist confirmed the snake was a previously unknown species after conducting a genetic analysis of tissue samples.
该研究小组由哈佛大学的格雷厄姆·雷诺兹博士带队，这位科学家在对组织样本进行基因分析后，确认这条蛇是一个此前不为人知的物种。
Thanks to the automobile, Americans soon had a freedom of movement previously unknown.
由于有了汽车，美国人很快就获得了前所未有的行动自由。
A previously unknown phenomenon.
一种之前人所未知的现象。
But the majority are unique, and previously unknown to science.
但是，绝大部分基因都是独一无二的，并在此前不为科学所知。
More than 15, 000 civilians died in previously unknown incidents.
超过15,000人的平民在此前的未知事件中丧生。
Sometimes you discover new, previously unknown parts of yourself.
有时，你还可以发现你不曾知道的自己的才能。
It has provided a lexicon of proteins, including many previously unknown ones.
它提供了一本蛋白质字典，包括很多先前未知的蛋白质。
This previously unknown mechanism may lead to new ways to combat viral infections.
这种前所未知的传播机制会导致抗击病毒感染的新方法。
But it has been enormously successful at identifying previously unknown individual genes.
但是在确定未知的单个基因方面，它获得巨大的成功。
What's more, said Stone, it found several strains of previously unknown microscopic organisms.
斯通表示，值得一提的是，它发现了一些以往未知微生物的新品种。
Since 1977 more than 1,300 species previously unknown to science have been discovered at the vents.
自1977年，超过1300种未知物种在热泉喷口附近被发现。
The identification of previously unknown target sites for antimicrobial action has proved difficult.
经证明很难确定先前未知的抗菌素作用靶位。
Since 1977 more than 1, 300 species previously unknown to science have been discovered at the vents.
自1977年，超过1300种未知物种在热泉喷口附近被发现。
But it was previously unknown that many mentally handicapped people were subjected to the procedure.
但从前并不知道的是许多智力障碍的人们都接受这一手术。
Many of the bones bear cut marks that point to a previously unknown Himalayan death ritual, experts say.
专家表示，许多骨头上都有切割痕迹，这表明了一种鲜为人知的喜马拉雅人的死亡仪式。
The severity of the September quake, along a fault line previously unknown to seismologists, had been a shock.
九月的地震的严重程度以及一条之前未被地震专家发现的断层线，都让人有些措不及防。
This states that a hydrogen atom can collapse into a previously unknown form called a hydrino, producing energy.
这种理论表明氢原子可以塌陷到一种以前从未被发现的次氢形态，并释放出能量。
But the greater transparency also could highlight previously unknown vulnerabilities in parts of the banking system.
但是公开的细节越多越透明，银行业部分以前未知的弱点也会得到放大。
People using Provigil or Ritalin may eventually be found to have a legitimate but previously unknown need for the drug.
最终可能会发现，那些人是出于先前不为人所知的正当理由，才服用Provigil或者利他灵的。
It should then be possible to discover new uses for existing drugs as well as previously unknown mechanisms of action.
这将有助于发现已存在药物过去未知的机制及新用途。
Early on the second night Horner reports the bio-signature of a previously unknown burrowing Zerg creature: an Infestor.
第二晚的一开始，霍纳会报告有两个未知的虫族生化信号出现：感染虫。
September's quake, along a previously unknown fault line, had unnerved locals.How and where to rebuild are now big questions.
去年九月的地震——单是一条尚不为人知的断层线——就令当地人感到焦虑不安，至今，何时何地重建新城还悬而未决。
September’s quake, along a previously unknown fault line, had unnerved locals. How and where to rebuild are now big questions.
去年九月的地震——单是一条尚不为人知的断层线——就令当地人感到焦虑不安，至今，何时何地重建新城还悬而未决。
September’s quake, along a previously unknown fault line, had unnerved locals. How and where to rebuild are now big questions.
去年九月的地震——单是一条尚不为人知的断层线——就令当地人感到焦虑不安，至今，何时何地重建新城还悬而未决。
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