1All the inhabitants of a particular town, area, or country.

该岛人口约78，000。

1. 1.1with 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）
   a city with a large student population

   Example sentencesExamples

   • The Chicago suburb has a large population of immigrants, including many from countries such as Iraq and Iran.
   • That was three weeks ago and the drain of the Catholic population in that area continues.
   • She sees more than 100 patients a month, about 10 percent of the area's older population.
   • The high occurrence of STDs in the region is reflective of the area's very young population.
   • The ideology also increased the Moorish soldiers' desire to care for the civilian population of the new land.
   • There has been concern in recent years over a rapid decline in the grey seal population in the area.
   • Because in many developed countries, governments are concerned about the global ageing population crisis.
   • The rise in the standard of living of the wage-earning population was important, but it must be kept in perspective.
   • These activists bring much more than rice and plastic sheeting to the civilian population hit hardest by the violence.
   • The hospital was in a part of town with a large population of Hmong immigrants.
   • This preposterous number effectively amounts to criminalizing most of the teenage male population of the Rampart area.
   • Above all, this is a zone in demographic upheaval as its youthful population races ahead of local capacities to socialise, educate and employ.
   • Does this have anything to do with the large Mexican-American population in the area?
   • Today the world faces the many-sided challenge that a rapidly aging population presents.
   • I went to an area known as Edgware Road, where there's a majority Muslim population in that area.
   • This can help bring to the fore, the plight of those who are the most vulnerable population due to HIV / AIDS.
   • These attacks against civilian population centers constitute war crimes.
   • Astoria, Queens is home to the largest Greek population outside of Athens.
   • What role will the rapidly increasing Christian population play?
   • Its appraisal centres on Europe's working population decline.
   • The current elephant population in the provincial area is around 300 elephants.
   • February and March are the time of year that the area's hare population is most visible.
   • The total cassowary population for the area is calculated to currently be just 42.
   • In the absence of alternative jobs, much of the local population earns a living or a part-time income from wine.
   • There is a huge West of Ireland population in the Manchester area and I have no doubt this will become the most popular flight from Knock.
   • DNA data will help create a clear picture of the area's nurse shark population and its dynamics.
   • That may work well in some areas, especially on urban lands, but will never be a viable solution for controlling deer population in wild areas.
2. 1.2with modifier 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。

   Example sentencesExamples

   • The growing rural population means people must drive more for work, shopping, and leisure activities.
   • He expressed hope that this way people would be able to have milk and cheap meat and also farm draft power, thereby raising the standard of living for rural populations in the district.
   • Does Australia seek a large population with a low living standard or a small population with a high living standard?
   • Leitrim has an even bigger percentage of people living in rural areas but its rural population has fallen in the past 30 years.
   • According to him, unemployment in the areas with mixed population was twice as high as the average for the country.
   • With a large area and small population, Botswana also faced the problem of access to services in rural areas.
   • Ward's small population and physically close living quarters mean that the community on the island is a tight one.
3. 1.3 The action of populating an area.
   移民活动
4. 1.4Biology A community of animals, plants, or humans among whose members interbreeding occurs.
   〔生〕种群，居群
   Example sentencesExamples

   • Microsatellites are an important source of information about the phylogenetic relationships among human populations.
   • The trails will enable visitors to easily discover Camp Henry's wide variety of natural habitats with their diverse populations of plants and animals.
   • Such drugs are routinely employed among both human and farm animal populations.
   • Studying how they evolve and move through human and animal populations might identify new flu reservoirs and enable the emergence of new strains to be predicted.
   • Similar changes have occurred in the human and animal populations of other Asian countries, creating an incredible mixing vessel for viruses.
   • We are increasingly impacted upon by disease generated overseas which affect our human, animal and plant populations.

   Synonyms

   community
5. 1.5Statistics A finite or infinite collection of items under consideration.
   〔统计〕总体，母体
   Example sentencesExamples

   • They would not have been significant by using conventional statistical tests for infinite populations.
   • The available research has mostly analyzed survey data collected from special populations.
   • Collection data for these populations have been reported previously.
   • The pattern of pairwise nucleotide differences predicted by the model is compared to data collected from sardine populations.
   • And we expect, that although this is a five-year effort to sample these populations and collect the data the analysis will in fact go on for many years.
6. 1.6Astronomy 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
   Example sentencesExamples

   • Here, Hubble astronomers have uncovered, for the first time, a population of infant stars.
   • The Kuiper belt and Oort cloud are populations of icy planetesimals located beyond the orbit of Neptune.
   • Astronomers have long exploited this correlation between age and color to study the ages of stellar populations in star clusters and galaxies.
   • International agreement will determine by how much emissions must contract each year, and then permits to emit will be allocated to all countries on the basis of their populations.
   • Corbin and Vacca examined a sample of dwarf galaxies chosen for their compact size and the youth of their star populations.