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.
它促使我们去探索宇宙的未知领域。
作者确实通过谈论未知物种暗示了这一点。
The author does imply this by talking about unknown species.
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.
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.
正是这种对未知的感觉，使得月球的远侧成为科学和太空研究的一个有趣的地方。
It's this sense of the unknown that makes the far side of the moon such an interesting place for scientific and space research.
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.
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.
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.
这些探险很可能是受当地人口增长和政治局势的影响的，以及探索未知水域的带来挑战和刺激感。
These expeditions were likely driven by population growth and political dynamics on the home islands, as well as the challenge and excitement of exploring unknown waters.
一个现实而紧迫的问题是，许多植物物种还没有被编目，因此它们在生态系统中的位置是未知的。
A real and pressing issue is that many plant species have not yet been cataloged, and so their place in the ecosystem is unknown.
半融雪通过一种未知的物理过程被压实，而固态、无气泡的冰是由富含可溶性有机物的水形成的。
The slush is compacted by an unknown mechanism, and solid, bubble-free ice is formed from water high in soluble organic substances.
这些“思想实验”是几页纸的计算，由一个虚拟的未知者签名并提交给著名的《物理学年鉴》杂志。
These "thought experiments" were pages of calculations signed and submitted to the prestigious journal Annalen der Physik by a virtual unknown.
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.
商业决策通常是由许多未知和不可知的因素做出来的，这些因素甚至会让最优秀的扑克玩家感到困惑。
Business decisions are often made with many unknow and unknowable factors, which would even puzzle the best poker players.
由于一些未知原因，很多被丢弃的物品还是被完整地保存下来了，而在近东的各地有上千件这样的物品出土。
For some unknown reason, many were discarded, often still intact, and thousands have been found all over the Near East.
所以如果这个符号是埃及古语，第一个符号应该是“ra”，然后是一个未知的符号，后面跟着一个双“S”音。
If the symbol were Coptic, the first symbol would be "ra" and then an unknown symbol followed by a double "S" sound.
面对未知的挑战，他们敢于踏上一段危险的旅程，而他们的同龄人大多在高端写字楼里做白领，享受着稳定的薪水。
Faced with unknown challenges, they are audacious enough to embark on a perilous journey while most of their peers enjoy stable salaries by working as white-collars at high-end office buildings.
面对未知的挑战，他们敢于踏上一段危险的旅程，而他们的同龄人大多在高端写字楼里做白领，享受着稳定的薪水。
Faced withunknown challenges, they are audacious enough to embark on a perilous journey while most of their peers enjoy stable salaries by working as white-collars at high-end office buildings.
因此，和英国人一样，Shirase 把他的探险描述为对知识的探索：他会带回化石，进行气象测量，并探索未知的大陆。
So, like the British, Shirase presented his expedition as a search for knowledge: he would bring back fossils, make meteorological measurements and explore unknown parts of the continent.
他们可以在未知的海域航行数天，并对该地区进行评估。他们知道如果没有发现任何东西的话，他们可以掉头，并借着信风迅速返回。
They could sail out for days into the unknown and assess the area, secure in the knowledge that if they didn't find anything, they could turn about and catch a swift ride back on the trade winds.
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.
观察你周围的未知事物。
地球上还有许多人类未知的地方。
There are many places on the earth that are still unknown to humans.
你可以在这里探索宇宙和它背后未知的奥秘！
Here you can explore the universe and the unknown mystery behind it!
幸运的是，我们的大脑在遇到未知事物时变得更加强大。
Luckily, our brains become stronger when meeting the unknown.
在一些数学练习中，字母“x”通常代表一个未知数。
The letter "x" often represents an unknown number in some Math exercises.
读书在我们的现实生活和未知世界之间架起一座桥梁。
Reading books builds a bridge between our lives and the unknown world.
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