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啃词典

population

生词本

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词汇等级:四级, 雅思

n. 人口, 人口数

复数:populations

视频例句

实用例句

  • Today it is 75 billion. During these 20 years, our population has only increased by 23. 3 percent.

    而如今则是750亿。20年来人口才增长了23.3%。

    The Pursuit of Happyness - 当幸福来敲门
  • The problem with--there's a problem with gambling behavior because in a certain fraction of the population we have pathological gambling.

    赌博行为有个特殊情况在人群中总会有一小撮人我们称之为病态赌博。

    Financial Markets - 金融市场
  • Then you could deliberately say the population of Turkey is between one and two people and then you know you're wrong.

    然后你可以故意说,土耳其的人口数在1人和2人之间,你知道你是错误的。

    Financial Markets - 金融市场
  • We can define it in a couple of different ways depending on whether we're talking about sample mean or population mean.

    我们有几种不同的方式去定义这个概念取决于我们指的是样本均值还是总体均值。

    Financial Markets - 金融市场
  • These are called population measures because they refer to the whole population of possible outcomes and they measure the probabilities.

    这些是用来度量总体的变量因为他们对应的是总体中所有的结果度量的是所有事件的概率。

    Financial Markets - 金融市场
  • When you get--this is Rituparna, counting the leaves on a tree-- you can estimate, from a sample, the population expected values.

    如果你...像数叶子的睿都巴若那一样只有部分样本的话,你可以来估计总体均值。

    Financial Markets - 金融市场
  • The population mean is often written "X-bar." If you have a sample with n observations, it's the summation I = 1 to n of xi/n--that's the average.

    总体均值一般写作X拔如果你有n个观测值,对Xi从i=1到n求和再除以n。

    Financial Markets - 金融市场
  • For population variance, the variance of some random variable x is defined as the summation i = 1 to infinity of the Prob (x = xi) times (xi - μ)2.

    总体方差是指一系列随机变量x的方差我们是这样定义的x=xi的概率乘以xi-μ的平方在i取1到无穷大时的累加。

    Financial Markets - 金融市场
  • They divide by n-1 to make it an unbiased estimator of the population variance, but I'm just going to show it in a simple way here.

    当除以n-1表示的是对总体的无偏估计,我在这里只是说的简单一点。

    Financial Markets - 金融市场
  • If you offer life insurance, you have life tables which give you probabilities of dying at various ages, but that's for the general population.

    如果你提供人寿险,你会找张寿命表告诉你各个年龄段的死亡率,但那是针对普通人群的。

    Financial Markets - 金融市场
  • All the sick people will come to you to buy life insurance and they will turn out to have a higher death rate than the population at large.

    所有生病的人都会向你购买人寿险而他们比普通人群有着更高的死亡率。

    Financial Markets - 金融市场
  • Bangkok is the capital of Thailand. Its population is 12 million people Alan, will you help!

    曼谷是泰国首都。拥有一千二百万人口。艾伦,过来搭把手!

    The Hangover 2 - 宿醉2
  • This is why the Unites States Senate, every state sends two senators rather-- irrespective of the size of the population.

    这就是为什么美国参议院,每个州都有两名参议员与州的人口数无关。

    Foundations of Modern Social Theory - 现代社会理论基础
  • Experiment does assume that we assign certain stimuli randomly to a population, and then to see how they respond to this stimulus.

    实验假设我们对人群随机分配特定刺激,然后观察他们对该刺激有何反应。

    Foundations of Modern Social Theory - 现代社会理论基础
  • Now, properly speaking, the industrial working class in the United States is probably not more than 15% of the population.

    严格来说,美国的工人阶级数量大概不超过总人口的15%。

    Foundations of Modern Social Theory - 现代社会理论基础
  • Today in the United States the agricultural population, I don't know the exactly the most current figure is somewhere between 1 to 2%. Right?

    而到今天,美国的农业人口,我不太清楚最近的确切数据大概占总人口的1%到2%左右?

    Foundations of Modern Social Theory - 现代社会理论基础
  • There was no society, except industrialized Soviet Union, where the majority of the population was industrial worker, but no ruling class.

    没有一个社会,除了完成工业化的苏联,其人口的大多数为产业工人,而非统治阶级。

    Foundations of Modern Social Theory - 现代社会理论基础
  • As the population of Britain continues to grow, some day we may have to find new ways to feed ourselves.

    英国人口的持续增长,终有一天,我们会需要其他食物。

    Museum of Life - 生命博物馆
  • Norway has a much smaller population than the UK and they have a lot of oil up there in the North Sea.

    挪威的人口比英国的要少得多而且他们在北海拥有大量的石油。

    Financial Markets - 金融市场
  • Those are the two population definitions. F(x) is the continuous probability distribution for x.

    这是两种对总体的定义。F(x)是x的连续型随机变量的概率分布。

    Financial Markets - 金融市场

实用词组

同根词

同义词

large population庞大的人口

aging population老年人口;老化人口

population increase人口增长

population density人口密度;种群密度

population quality人口素质;人口质量

population census人口普查

population distribution人口分布;总体分布;粒子数分布

population explosion人口爆炸;人口激增

general population母体

initial population起始粒子数反转;原始群体

population genetics群体遗传学;人口遗传学

population structure人口结构;种群结构;总体结构

urban population城市人口

population growth人口的增长

floating population流动人口

rural population农村人口

target population人口指标,目标人群

population size人口规模;人口数量;群体大小

population control人口控制;种群控制

population dynamics种群动态;人口动态

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