世卫组织还通过其研究议程，确定和促进在射频场与卫生领域的研究重点，以填补知识空白。
WHO also identifies and promotes research priorities for radiofrequency fields and health to fill gaps in knowledge through its research agendas.
这项新研究试图填补这一领域一直被忽略的空白。
This new study attempts to fill the gap in an area that has been neglected.
对于知识产权产品的平行进口问题研究，国内外学者主要集中在商标和专利产品领域，对著作权产品的平行进口问题讨论较少，在我国相关立法上亦是空白。
To study on parallel import of intellectual property goods, most of scholars focus on the domains of trade marks and patents, but few on copyright, and our legislation are blank.
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