Censuses and surveys can be used to estimate population Numbers, but do not provide information on causes of death.

可通过普查和调查来估算人口数量，但这无法提供死亡原因信息。

youdao

With no natural predators and expanses of green suburban neighborhoods that allow no hunting, wildlife officials estimate the New Jersey deer population to have grown to exceed 175,000.

由于没有天敌，又有大片绿色的郊区禁止捕猎，野生动物官员估计，新泽西鹿的数量已经超过17.5万只。

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European scientists asked volunteers to estimate statistics like the population density of Switzerland. Each person got five guesses.

欧洲科学家们让志愿者们估计一些诸如瑞士人口密度的数据，每个人有五次猜测机会。

youdao

City officials estimate the population at seventy thousand.

VOA: special.2009.03.30

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

耶鲁公开课 - 金融市场课程节选

You have to make those calculations and there are errors in that, but you come away with a population estimate of things like that.

你必须把这些都算进去,因为其中存在误差,但这样你会得出,整体人群摄取量的估算值

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

From sample surveys, officials estimate the population at the end of 2009 to have been 1.33 billion.

ECONOMIST: China's ten-yearly census: The world's biggest headcount | The

Now city officials estimate the population at around 300, 000, and the paper's circulation was down to 179, 834 for the six months ending March 31, 2008.

FORBES: Magazine Article

As the population grows from its current 1.3 billion, experts estimate the swelling population will require about ten million new housing units to be built each year for the next twenty years.

FORBES: Three Moneymakers From China's Slowdown