The existing materials indicate the existing research about this subject is incomplete, not systematic, not deep.
已有的资料表明关于这一课题的现有研究是不完整、不系统、不深入的。
The systematic research of illegal possession purpose which is inorder to clarify the confusion, eliminate the bifurcation, and deep the research is important to both theory and practice.
对非法占有目的予以系统研究，以求澄清混乱，消除分歧，将该问题引向深入，无论于理论还是实践，都具有重大意义。
This article also points out that the correct differentiation and classification of the phenomena of abnormal colour sense have much room for a deep and systematic research.
同时也提出了关于对各种异常色觉现象的正确鉴别和分类还有待于做深入、系统的研究。
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