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。
A previously unknown extremist group has said it carried out Friday's bomb attack.
迄今他的下落全然未知。
他默默地走进未知的世界。
这种色素为什么会存在和它可能有什么作用是未知的。
我记得那种对未知的恐慌感。
高考结束后，我们将告别彼此并启航驶向未知的未来。
After the College Entrance Examination, we will bid farewell to each other and set sail for an unknown future.
这艘宇宙飞船即将开始一趟振奋人心的未知世界之旅。
This spaceship is about to start an exciting voyage into an unknown world.
当面对一些未知的事情时，拿出一点勇气就有可能带来成功。
A little bravery can result in the possibility of success when confronted with something unknown.
见越入道的真实身份仍是未知，但有些地区的人们相信他是由黄鼠狼，狐貍或貍变的。
Mikoshi-nyudo's true identity is unknown, but in some areas, he is believed to be a shape-shifting weasel, fox or tanuki.
西非所有从某个未知的日期开始记录的主要农作物都是从其他地方引进的，刚开始是种植水稻和山药。
All the recorded staple crops grown in western Africa were introduced from elsewhere, beginning, at some unknown date, with rice and yams.
这项提案中的未知数太多了。
等式中的X和Y都是未知数。
她现在认识马克斯也好几年了，但是他仍然是个大大的未知数。
She had known Max for some years now, but he was still pretty much an unknown quantity.
人的无知带来了恐惧，对未知事物的恐惧。
他的主张基于匿名及未知出处的资料的评论。
His claims were based on the comments of anonymous and unidentified sources.
惊人数量的慢性病是由未知的环境因素引起的。
A surprising number of ailments are caused by unsuspected environmental factors.
战争的持续时间是其中一个最大的未知数。
局势中的未知因素在东欧。
他把生命看作是一次探索未知世界的航行。
在Juan的世界里，未知和未被发现的东西是广阔而不可思议的。
In Juan's world, the unknown and undiscovered was vast and marvelous.
它促使我们去探索宇宙的未知领域。
随着时间的推移，这些选择可以累积成其他动物未知的进步壮举。
Strung together over time, these choices can accumulate into feats of progress unknown to other animals.
此外，当面对一些未知的事情时，一点勇气可以导致成功的可能性。
Furthermore, a little bravery can result in the possibility of success when confronted with something unknown.
在DHL速递办公室附近，枪手开车接近他们的车后开火，尚未知国籍的一男一女死亡。
A man and a woman of unknown nationalities died when gunmen driving by opened fire on their car near the DHL courier office.
这种援助对于查明潜在危险——有毒物种、不可预测的河流、未知领域——至关重要，那些危险可能意味着生死之差。
Such assistance was essential in identifying potential dangers—poisonous species, unpredictable rivers, uncharted territories—which could mean the difference between life and death.
头两个符号是未知的，但商博良知道，在最右边重复出现的象形文字代表“S”的声音。
The first two of these symbols were unknown, but Champollion knew that the repeated hieroglyphs to the far-right symbolized an "S" sound.
栗子中害虫的命运在到达目的地之前是未知的。
The destiny of the pest in the chestnut is not known before reaching the destination.
尸检分析显示出存在一种未知的病毒，以及一种已知的有毒细菌的证据。
Postmortem analysis showed the presence of an as yet unidentified virus, as well as evidence of a know bacterial toxin.
如今的火星织机作为人类的下一个伟大的未知领域隐约出现。
很难想象这会对牛产生怎样的影响，但这种关系可能会以某种未知的方式帮助或阻碍牛群的发展。
It is difficult to imagine how this could affect the cattle, but the relationship may help or hinder them in some way not yet recognized.
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