Though the research on the subject is thin, one estimate pegs more than half of refugees lack professional training.

虽然在这方面的研究不多，但有一项预测认为，超过半数难民没有接受过职业培训。

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The extrovert ideal has been documented in many studies, though this research has never been grouped under a single name.

许多研究都证明了外向的理想性格，尽管这些研究从未被归类在一个单一的名字下。

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Though sucking zinc lozenges has been promoted as a treatment for the common cold, research has revealed no consistent effect.

虽然吸锌片已经被推广为治疗普通感冒的药物，但研究显示并没有一致的效果。

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However, I think I will share with you that the cause of his death was in fact, related to his research here, even though it was a little more tangled up.

并没有杀死他,但我告诉你们,他的死，和他的研究有很大关系。

麻省理工公开课 - 化学原理课程节选

Though the research is in its early stages, it opens the door to a host of possibilities.

WSJ: Doctors use brain scans to 'see' and measure pain

And even though the research shows it is unproductive to criticize more than praise, experts say it is still important to give negative feedback once in a while.

CNN: Can you cope with criticism at work?

The similar trajectory of word birth and death across time in three languages is "striking, " though the research is still too new to evaluate fully, says Mark Liberman, a professor of linguistics at the University of Pennsylvania.

WSJ: Culturomics Looks at the Birth and Death of Words