ex.ten.si.ty
n.（名词）【复数】 ex.ten.si.ties
The quality of having extension or being extensive.扩张性，延展性：有延长的性质或延长的性质A specific degree or range of extension.扩展界限：扩展的具体程度或界限The attribute of sensation that enables one to perceive space or size.扩展感觉性：使人能觉察到的空间或大小的感觉的性质
