重要句群,Important sentence groups
multi-levels sentence groups多重句群
1.Structural analysis is employed to expound Japanese multi-levels sentence groups and its relevant issues, and then the theory of its forming element is put forward.运用层次分析法阐述日语多重句群及与之相关的问题，并从多元句群的角度提出了日语句群的构成元素说。
3)sentence significance句子重要度
4)important machinery group重要机泵群
5)community landscape important value群落景观重要值
6)Important taxa in economy重要经济类群
延伸阅读

重要1.指重镇﹑要地。 2.谓重大而主要。