population
/ˌpɒpjʊˈleɪʃən/noun
1- all the inhabitants of a particular town, area, or country（城镇、地区或国家的）全体居民, 人口：
the island has a population of about 78,000.
该岛人口约78,000.
1.1
- with adj. or noun modifier a particular section, group, or type of people or animals living in an area or country（人或动物的）特殊群体（或类型）：
measures to speed up integration of the country's immigrant population.
加快该国移民群体融合的措施。
1.2
- mass noun with adj. the specified extent or degree to which an area is or has been populated人口密度：
areas of sparse population.
人口稀少的地区。
1.3
- mass noun the action of populating an area移民活动。
1.4
- Biology a community of animals, plants, or humans among whose members interbreeding occurs【生】种群, 居群。
1.5
- Statistics a finite or infinite collection of items under consideration【统计】总体, 母体。
1.6
- Astronomy each of three groups (designated Ⅰ, Ⅱ, and Ⅲ) into which stars can be approximately divided on the basis of their manner of formation【天文】星族。
词源
late 16th cent. (denoting an inhabited place)： from late Latin populatio（n-）, from the verb populare, from populus 'people'.