populations是什么意思，populations的意思翻译、用法、同义词、例句

词性

单数 population

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The Croatian town of Ilok is a classic case of shifting populations.

伊洛卡的克罗地亚小镇就是人口不停流动的典型例子。

They had not been exposed to most diseases common to urban populations.

他们未曾遭遇城市人口常得的大多数疾病。

This depends on how dense their populations are.

这个取决于他们人口的稠密度。

The Hap Map contains samples from 11 populations and consists of readings of the DNA at specific sites along the genome where variations are common.

Hap 图谱包含了11个种群的样本，并包含了基因组上一些常见变异的特定位点的 DNA 读取。

The ethnic populations are so intermingled that there's bound to be conflict.

种族如此混合，必有冲突。

population growth

人口的增长

rural population

农村人口

population density

人口密度；种群密度

floating population

流动人口

large population

庞大的人口

单词"populations"是一个名词，表示人口、动植物群体或者某一地区内的人口数量。

The populations of some endangered species have been decreasing rapidly. (某些濒危物种的数量正在迅速减少。)
The populations of certain cities have been growing at an alarming rate. (某些城市的人口正在以惊人的速度增长。)

"Populations"这个词通常用来描述某一地区或者某一类生物的数量，可以用作主语、宾语或者定语。例如：

The populations of fish in the river have been declining due to pollution. (由于污染，河中的鱼类数量正在减少。)
The government is implementing policies to control the populations of stray dogs in the city. (政府正在实施控制城市流浪狗数量的政策。)

"Populations"可以指人口，动植物群体，也可以用于描述某一地区内的人口数量。该词与"population"的区别在于，"populations"强调的是群体的数量，在使用时需要注意单复数的变化。