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The result has been not just a welcome explosion of temporary and part-time jobs, but, more insidiously, the entrenchment of a twotier labour market. 这种结果不仅是提供了受人欢迎的大量的临时工作和兼职工作的机会，但，更深层次的危害是，它也加强了两级（内外）人力市场。