Certain characteristics of American society help to explain this remarkable migration.

美国社会的某些特点有助于解释这种显著的移民现象。

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The migration of the population has great effects on the economy and society of Sichuan, even on the whole country.

人口的迁移流动对四川乃至全国的经济、社会产生着重要影响。

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Australia's skilled migration program has served Australia well for many decades. It has delivered us thousands of highly skilled migrants who have enhanced our economy and enriched our society.

澳洲的技术移民计划一直在为我国服务， 也已经带给我国成千上万拥有高技能的人士， 一并增强了我们的经济并丰富了我们的社会。

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According to the Oxford University Centre on Migration Policy and Society, London and Birmingham are the major hotspots for statelessness.

BBC: Children 'with no state' in UK

But there are a lot of them some 120, 000 in Britain, or one in 100 children, according to a new study by Oxford University's Centre for Migration, Policy and Society (COMPAS).

ECONOMIST: Migrant children

Bridget Anderson of Oxford University's Centre on Migration, Policy and Society recalls receiving the results of a questionnaire administered to domestic employers in a number of different countries, which asked what the staff spent their time doing.

ECONOMIST: Domestic labour