demarcate
verb [ T ] uk/ˈdiː.mɑː.keɪt/ us/ˌdiːˈmɑːr.keɪt/ (US also demark)
标出…的界限；给…划界；界定
to show the limits of something
Parking spaces are demarcated by white lines. 停车位用白线标了出来。
Responsibilities within the department are clearly demarcated. 部门内部的各项职责都有明确的界定。