When class begins, there are then impediments to meaningful research.

开始上课时，也还是会有进行有意义的研究的阻碍。

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The introduction typically begins with a general statement of the problem area, with a focus on a specific research problem, to be followed by the rational or justification for the proposed study.

引言一般以对该领域的简单描述开始，同时关注某一特定的研究问题，接下来是拟定研究的基本原理。

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Keep in mind that careful research and preparation are needed before the sales team even begins to engage the customer.

在接触客户前，销售团队就应该仔细研究，认真准备。

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The story begins with a research paper which compares English and Welsh hospitals during a period when the English were pushing waiting list targets but the Welsh did not, choosing to emphasise other priorities.

BBC: A magnifying glass on top of a fingerprint

Modern drug research begins with a gene.

FORBES: A hail of silver bullets

Having trapped the animals, the dangerous work at the forest research station now begins.

BBC: News | Africa | Fighting back at ebola