名词
中文翻译：移民数量
同义词：
['emigration', 'emigrantvolume', 'population movement']
例句：
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1. The migration volume has increased significantly inrecent years.
近年来，移民数量显著增加。
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2.The government is working on a plan toreduce the emigration volume.
政府正在制定一项计划以减少移民数量。
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3. The populationmovement has had a significant impact on thelocal economy.
人口流动对当地经济产生了重大影响。