名词 population:

1. the people who inhabit a territory or state

2. a group of organisms of the same species inhabiting a given area

3. (statistics) the entire aggregation of items from which samples can be drawn

4. the number of inhabitants (either the total number or the number of a particular race or class) in a given place (country or city etc.)

5. the act of populating (causing to live in a place)

populationn.人口；(全体)居民；群体population law人口规律population risk群体发病率population rate总体率population mean总平均,全平均population load人口包袱population base人口基数population dose集体剂量, 群体剂量, 人口剂量population move人口迁移population data人口资料population mass群体质量