一旦真相明了，他们要求更高的工资，失业率又会回升到自然比率。
Once the truth dawned and they demanded more pay, unemployment would rise back to its “natural” rate.
这一句，个人认为需要调整一下：在这种模式下，工资的多少和职位的高低随着年龄的增长而增长，而员工到了退休年龄也自然而然的退休。
which assumes that people should get pay rises and promotions on the basis of age and then disappear when they reach retirement.
穷国因为工资较低所以自然而然地平均价格也比较低。
It is natural for average prices to be lower in poorer countries because wages are lower.
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