demarcate

v [Tn] mark or fix the limits of (sth) 标出或确定（某事物）的界线: The playing area is demarcated by a white line. 运动场地以白线为界.

delta, delta wing aircraft, delude, deluge, delusion, delusive, delusively, delve, Dem, dem(o)-, demagnetization, -isation, demagnetize, demagnetise, demagogic, demagogue, demagogy, demand, demand bill, demand loan, demand for, demand to do, demanding, demarcation, demarche, demean, demeaning, demeanour (US demeanor), demented, dementedly, dementia, dementia praecox, demerara, demerit, demesne, demi-, demi-monde, demigod, demijohn, demilitarization, -isation, demilitarize, demilitarise, demise, demist,