Semantic research is the main trend of modern linguistic research, while semantics formal research is the main trend of semantic research, which cannot be avoided.
当代语言学的研究大有语义化之趋向，而语义形式化的研究已经成为当今语义学研究的主流之一，是不可避免的。
Complete and formal description method of spatial relation semantics is emphasized in GIS research field. Dynamic and fuzzy spatial relations make the method very complicated.
完备和形式化的空间关系语义描述方法一直是GIS理论研究的重点，空间关系的动态性和模糊性决定了描述方法的复杂性。
Complete and formal description method of spatial relation semantics is emphasized in GIS research field. Dynamic and fuzzy spatial relations make the method very complicated.
完备和形式化的空间关系语义描述方法一直是GIS理论研究的重点，空间关系的动态性和模糊性决定了描述方法的复杂性。
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