Migration, in the current sense of massive movements of people across borders, by its very nature gives rise to complicated issues that go beyond the mere hosting of foreign nationals within one's borders.
移徙当前意味着人们大批越过边界，由于本身的性质，导致出现了各种复杂的问题，它们超出了仅仅在一国边界内收容外国国民的范畴。