The view that competitive market structure is most helpful to motivate R&D is verified by this paper by comparing different market structures without R&D rivalry.

在无专利竞赛下，通过对不同市场结构下企业R& D动力的比较，本文认为竞争性市场结构有利于激励企业的技术创新。

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The series opener was a competitive new chapter in an increasingly fierce rivalry, but there weren't any scuffles this time.

NPR: Durant, Thunder Edge Grizzlies 93-91 In Game 1

It has been suggested that there was a rivalry between the siblings, and Amy certainly possessed a competitive streak.

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Quiz any true Sounders fans about what gets their competitive juices flowing, and they will talk at length about the passions ignited by their intense rivalry with their Pacific Northwestern neighbours the Portland Timbers.

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