net immigration短语¹⁴⁴⁹⁷²⁺² 基本例句 净移民数 With no net immigration, and fertility rates more or less where they've been for the past35 years, the Bureau of Statistics estimates that our population in 2050 would be roughly the same as now. 刨去移民因素，如果生育率和过去35年持平的话，统计局估计到2050年时候，我们的人口将和现在差不多。 yeeyan