53. What does the passage say is a consequence of the global migrant crisis?

53. 根据这篇文章，全球移民危机的后果是什么？

There's far more of them than there are global migrants, which we don't hear about, right?

这个人数比起全球移民人数要多得多，这个我们没听说过，对吗？

However, there are plenty of examples of nation states that work well despite being made up of different groups, such as Singapore, Malaysia and Tanzania, or nations created from global migrants like Australia, Canada and the US.

然而，无数例子也表明，各个民族国家仍可以良好运行，虽然它们是由不同的群体组成的，比如，新加坡、马来西亚和坦桑尼亚，或澳大利亚、加拿大和美国等由全球移民创建的国家。