According to a recent article in the Wall Street Journal, over the past few years, new research has given us a much deeper understanding of the relationship between what we earn and how we feel.
最近，《华尔街日报》的一篇文章就指出，在过去的几年间，新的研究让我们对挣钱多少与心理感受间的关系有了更深刻的认识。
Thirdly, a good teacher should have the teaching faculty. He should acquire enough knowledge. He must master much deeper theories in his research field.
第三，老师应该具有教学技能，掌握足够的知识。必须掌握他所研究领域的更深层次的理论。
This raises a much deeper question about how the direction of research is determined and controlled.
这就引发了如何确定并控制该项研究方向的更深层次问题。
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