N-COUNT (某一国家或地区的)全体人民,人口 The population of a country or area is all the people who live in it.
Bangladesh now has a population of about 110 million. 孟加拉国现有大约1.1亿人口。
...the annual rate of population growth. 人口年增长率
...the local population. 当地人口
N-COUNT (某一国家或地区某类人或动物的)总数 If you refer to a particular type of population in a country or area, you are referring to all the people or animals of that type there.
...75.6 per cent of the male population over sixteen. 16岁以上男性中的75.6%
...areas with a large black population. 黑人人口众多的地区
...the elephant populations of Tanzania and Kenya. 坦桑尼亚和肯尼亚的大象种群