demarcate['di:mɑ:keit]vt.1.■勘定…的界线(或边界),给…划界,定(或划、标)界(或分界线):He demarcated a piece of property.他给一块地产划界。2.■区分,分开;区别:They demarcated the lots with fences.他们以栅栏划分场地。变形vt.demarcateddemarcating