demarcation Ldi: ma?keijn; /dimaPkeJon/ n [U] marking of a boundary or limit; separation: 制界線(xiàn); 區(qū)分; 劃分： a line of ~; 分界線(xiàn); ~ problems in industry, eg settling the kind of work to be done by workers in different trades. 工業(yè)上各部門(mén)工作范圍的劃分問(wèn)題。