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。
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.
研究人员企图更深入的理解与抗抑郁药物有关的、药物对孕妇、胎儿的危害以及帮助患者和医生作出个性化的决定。
Researchers struggle to better understand therisks associated with antidepressant medications to pregnantwomen and unborn children and help patients and physicians makeindividualized decisions.
皮肤颜色将变得更深，来帮助减轻由于臭氧层破坏下地球紫外线的辐射造成的危害。
Skin will also become more pigmented to help alleviate the damage by harmful UV radiation outside of the earth's protective ozone.
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