Three African-Americans were killed by shots fired at random from a minibus.
3名非洲裔美国人被从一辆小型公共汽车中胡乱射出的子弹打死了。
A small boy appears utterly confused as the ears twirl apparently at random above him.
一个小男孩看起来非常困惑，而他的耳朵在他上方随意地转动着。
The experimenter is back there with the speed knob and at random intervals, he just speeds up the tape of their heart and then slows it down.
实验者带着速度旋钮回到那里，在随机的时间间隔里，他只是给他们的心跳录音带加速，然后再减速。
The idea for the experiment came from observing the birds using tools to pick at random objects, such as a picture of a spider that was printed on some cloth.
这个实验的想法来自于观察鸟类使用工具随机挑选物体，比如在一些布上印有蜘蛛的图片。
Three people were killed by shots fired at random from a minibus.
三个人被一辆小巴里乱射的子弹打死了。
We received several answers, and we picked one at random.
我们收到了好几个答案，就随机地拣选了一个。
I sat down on the floor and pulled a few books off the shelf at random.
我坐在地上，从书架上随便拿了几本书。
This law abolished special educational requirements for federal jurors and required them to be selected at random from a cross section of the entire community.
该法案废除了对联邦陪审员特定的受教育水平的要求，并要求联邦陪审员是随机选自全社会各阶层的。
Spores light enough to float on the breezes were carried thousands of miles from more ancient lands and deposited at random across the bare mountain flanks.
轻到能在微风中漂浮的孢子从更古老的地方被带到数千英里外，随意沉积在光秃秃的山侧。
If the electrons are spinning at random, these fields cancel each other out.
如果电子随机地自转，各电子所产生的磁场会彼此抵消。
The AD Happiness Survey, for instance, continually picks advertisers at random and asks them about their experience.
例如，在广告幸福调查中，继续随机挑选广告人并请他们谈谈自己的体会。
Note: The patterns I discuss in this article were chosen at random to address common tasks.
注意：本文中我所讨论的模式是为进行普通任务而随机选择的。
To boost my blog traffic, I held a contest, awarding $50 gift cards to readers I picked at random.
为了提高我的博客流量，我举办过一场比赛，奖予价值50美元的礼品卡，获奖者是我从读者中随机抽取的。
A participant will usually be assigned to the standard group or the new group at random (called randomization).
试验参与者通常将会被随机分配到标准治疗组或者是新治疗组(称之为随机分组)。
As is standard practice in such trials, the women were split at random into two groups.
研究按照标准化操作，将被试随机分为两组。
The two groups are chosen at random, so the remedy should be the only systematic difference between them.
这两个组是随机抽取的，所以他们在系统中的唯一区别就在是否接受治疗。
Other layers include checking identities, scanning people and their luggage and searching them at random.
其它层次包括检查身份证，扫描人体和行李以及随机搜身。
They lost some grains on ground at random and reaped more, which initiated the original agriculture.
他们随意地将谷物丢在地上并且收获了许多，这便是最原始的农业。
It may be one of many aspects of the climate that flop around, seemingly at random, over periods of years to decades.
这可能是数年至数十年的周期以来气候骤然变向的诸多方面之一，而且看似毫无章法。
I chose a publisher at random and put the manuscript in an empty Pampers diapers package, the only box I could find.
我随意选择了一家出版社，将手稿用空的“帮宝适”尿布的盒子包起来——这是我唯一能找到的盒子了。
That way you can truly select one at random and not waste all your time trying to decide which one to explore.
这样，你才能真正随机选择其中之一，而不是浪费所有的时间决定去探索哪一个。
The researchers also selected at random a control group of 478 children who weren't given reading books.
研究人员还从那些没有获得阅读书籍的孩子们中随机挑选了478名作为对照组。
In Dr Toyabe's experiment, the jolt that moved the bead came from molecules in the liquid buffeting it at random.
在鸟谷部博士的实验中，使珠子产生运动的撞击来自于液体中运动分子的随机碰撞。
Volunteers were assigned to be managers or subordinates at random.
志愿者谁当经理谁作下属是随机安排的。
When you look at the data, however, it is hard to argue that the markets have been attacking at random.
但是当你查看数据时，就会发现那些被攻击的市场并不是被随意选中的。
He observed painters, rock climbers, dancers, musicians, and surgeons, taking surveys and later paging them at random intervals.
他观察画家、登山者、舞者、音乐家和外科医生，记录他们的行为并随机访问。
A network can be difficult to maintain if router performance comes and goes at random intervals.
如果某个网络的路由器的性能处于不同的水平区间，那么该网络很难维护。
A network can be difficult to maintain if router performance comes and goes at random intervals.
如果某个网络的路由器的性能处于不同的水平区间，那么该网络很难维护。
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