面对新的形势，高校图书馆的读者服务工作必须转变观念，丰富内涵，拓展外延，才能更好地为读者提供服务。
Facing the new situation, the university library must transform the conception, enrich the connotation, expand the denotation for the purpose of providing the better service for the readers.
本文对光行差效应进行了较为深入的探讨，通过麦比乌斯变换将其与黎曼球联系了起来，从而极大地拓展了光行差效应的内涵与外延。
The article mainly discusses the aberration effect. We combine Riemann globe with it by Mobius transformation, thus it is developed that the connotation and the extension of aberration effect.
它弥补了我国证券民事赔偿方面立法的部分不足，与前者相比，拓展了“虚假陈述”的外延，但在诉讼时效的起算日、虚假陈述揭露日等方面的有关规定还有待于完善。
Compared with the former, it extended the outer scope of "Misrepresentation" but such provisions as value date of lawsuit prescription, disclosure date of misrepresentation still await amendments.
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