@meew
There's one big conclusion from studies of the net fiscal costs/benefits of immigration (where such studies have been allowed like Netherlands or Denmark).
从关于移民的净财政成本/收益的研究中得出了一个重要结论(荷兰或丹麦等国家允许进行此类研究)。
They would have been better off with zero immigration.
如果零移民,他们的生活会更好。