The letter "x" often represents an unknown number in some Math exercises.
在一些数学练习中，字母“x”通常代表一个未知数。
You can use that wildcard at any location of the filter string to match any number of unknown characters.
您可以在过滤器字符串的任何位置使用该通配符，以匹配未知字符的数量。
This is impossible when the component is reading data from a database because in this case, the number of items in the shopping cart is unknown before it's read.
当组件正在从数据库中读取数据时这是不可能的，因为在本例中，购物车中的条目数量在读取前是未知的。
Krishnan Bhaskaran, who led the research, said the findings meant that the sustained cold experienced in the UK last winter must have claimed an unknown but significant number of lives.
克里斯南巴斯卡兰，发表声明说这些发现意味着去年冬天英国持续的寒冷已经夺走了虽然不明数量但肯定非常多的人的生命。
A couple of hours after I left the comment, I got a text message from an unknown number.
我评价过后几个小时，收到了一个陌生号码的信息。
Near dawn this morning, police and gunmen exchanged sporadic gunfire at the two luxury hotels, where an unknown number of western hostages were still being held.
今日早晨破晓时分，警察和袭击者在两座豪华酒店零星交火，人数不明的西方人质仍被劫持在酒店中。
Mikhail Beketov, editor of a local newspaper, was pummelled with metal poles by an unknown number of attackers and left for dead.
MikhailBeketov，这位当地一家报纸的编辑被一群不明人数的攻击者用金属杆连续击打至奄奄一息。
Using complex statistics, Worm and colleagues used the number of genera, families, and so on to predict Earth's number of unknown species, and their calculations gave them a number: 8.7 million.
通过运用复杂的统计数据，沃姆（Worm）和同事们用属、科等的数量预测出地球上未知生物的数量，计算结果为：870万。
So let's start with a case when we have some number of the equations say n equations and n unknown.
所以让我们从一个例子入手，当我们有一些方程式，假定n个方程，n个未知数。
An Infantino spokesman said 10, 000 of the recalled slings had been sold to the UK market, although an unknown number could still be in stores.
Infantino的一位发言人说，从英国市场召回的背巾已有一万条，不过可能还有部分背巾作为库存并未售出，数量尚不明确。
However, it begins to break down in scenarios that involve complex conversation threads and distributed conversation scenarios (feeds from an unknown number of content publishers).
然而，在有些场景则不适用，比如涉及复杂对话线程和分布式对话的场景(来自内容发布者未知成员的提要(feed))。
That may be difficult to realize, however, because an unknown number of doses is already tied up through contracts between pharmaceutical companies and countries that can afford them.
不过，因为不知多少疫苗已经被买得起的国家和制药厂签订采购合同预订了，这些计划实现起来也许有些困难。
Their number and strength, their ebb and flood, their play and counter play and above all the laws of their nourishment remain quite unknown to us.
他们的数量以及力量，他们的起起落落，他们的游戏和相反的游戏，超越所有的，它们自己营养的定律，那对我们还是未知的。
The number of patients who have been conned, harmed or even killed is unknown, Qiu says.
邱仁宗表示，被欺骗、伤害甚至致死的病人人数尚属未知。
Problem: Part of a process has to be executed multiple times in parallel, the number of which remains unknown until the process actually runs.
问题：流程的一部分需要以并行方式多次执行，而其数量在流程实际运行之前未知。
The client can still discover a service by using the properties, such as a floor number and document type, but with an unknown service interface.
客户端仍可以使用属性发现服务(如场所编号和文档类型)，但不知道服务接口。
Whether in Asia or the Arab world, an unknown number of women face an agonising problem having broken a deep taboo.
无论身处亚洲还是阿拉伯世界，不计其数的妇女因打破了根深蒂固的社会禁忌，陷入了痛苦的漩涡之中。
At present the number of the giant lizard is getting fewer and fewer in the world.It is unknown that how many giant lizards of this kind have been alive.
目前世界上的巨蜥数量越来越少，这种巨蜥究竟有多少存活尚不清楚。
At present the number of the giant lizard is getting fewer and fewer in the world. It is unknown that how many giant lizards of this kind have been alive.
目前世界上的巨蜥数量越来越少，这种巨蜥究竟有多少存活尚不清楚。
In June its guerrillas stormed a prison in Aden and freed an unknown number of comrades.
6月，游击队员冲进亚丁的一所监狱，释放了数目不明的同志。
The number of Americans living overseas is unknown, but estimates range from 4 to 7 million.
虽然不清楚美国海外侨民的确切数目，但据预计在400万至700万之间。
Often, when I am reading a good book, I stop and thank my teacher. That is, I used to, until she got an unlisted number. ~ Author unknown.
每当我阅读一本好书，总会停下来感谢我的老师。更确切地说，我过去常这么做，直到她换了电话号码，号码簿中找不到。
Snow leopards live between 3, 000 and 5, 500m above sea level in the mountain ranges of Central Asia, but due to their elusive nature their exact number is unknown.
雪豹生存在中亚地区海拔3000- 5500米的山区之中，但由于其行踪隐秘的特性，具体数量还不得而知。
U - number of unknown answers in the first pass of the repetition, i.e. the number of questions that have one or more dots in their first column of the repetition scores field.
U-没答对问题的个数，也就是在重复学习评分栏里有一个或多个点的问题个数。
Interpolationsolves the following problem: given the value of some unknown function at a number of points, what value does that function have at some other point between the given points?
插值解决了以下问题：鉴于价值在一些未知函数的若干要点，没有什么价值的功能已经在一些其他点之间的了点数？
Those cases of DCM that occur in certain family groups are associated with a number of mutations affecting muscle cells. However, most cases are of unknown cause.
那些出现在某个家庭的扩张型心肌病的病例与一些影响肌肉细胞的变异相关。然而，很多病例是原因未明的。
Those cases of DCM that occur in certain family groups are associated with a number of mutations affecting muscle cells. However, most cases are of unknown cause.
那些出现在某个家庭的扩张型心肌病的病例与一些影响肌肉细胞的变异相关。然而，很多病例是原因未明的。
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