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汉语拼音：rén kǒu qiān yí

人口迁居到另一地点已达一定时间而改变了永久居住地的现象。人口迁移的形式为移民。人口迁移按范围大小一般可分为国际迁移和国内迁移两大类。

• Not all that shift can be attributed to the movement out of the snow belt, census officials say.

  人口普查官员说，并非所有这些人口迁移都是为了离开寒冷地带。

• By improving the quality of education of children of migrants, such a migration pattern will also be good for long term productivity growth.

  通过提高农民工子女的教育质量，这种人口迁移模式也有利于长期的生产率增长。

• At any of the various stages of Taiwan area, the characteristics of its population migration have been changing continuously.

  在台湾地区经济发展的各个阶段，其省内人口迁移的特征也不断发生变化。

• Despite the partition of British India, it had seemed at first that there would be no transfer of populations.

  尽管当时巴基斯坦和英属印度已经实行了分治，但最初看来似乎不会出现人口迁移。

• Population movement led to the personal client army of the late republic, which has long been recognized as a key to understanding its fall.

  在后罗马共和时期，人口迁移带来的这种私人部队，被普遍视作理解共和罗马衰落的钥匙。

• When the land in rural areas is subject to strict control, there will be a definite inhibition effect on the population migration.

  当对农村土地的占有采取严格控制时，对人口迁移具有一定的阻止作用；

• The researchers found that after a population of humans migrated off the African continent, the group shrank for some unknown reason.

  研究人员发现，一些人口迁移出非洲大陆之后，这些人口由于未知的原因而减少。

• This would be the first of many population migrations from north to south in Chinese history.

  这将是第一次，许多人口迁移从北到南在中国的历史。

• Agriculture provided a more dependable source of food, causing populations to increase; eventually excess population migrated to new lands.

  农业提供了更加可依赖的粮食来源，使人口增长；最终过多的人口迁移到新的土地。