entrench /in'trentf; m'trentj/ vt [VP6A] 1 surround or protect with a trench or trenches: 圍以孽溝; 以壕溝防護(hù)： The enemy were strongly ~ed on the other Ude of the river. 敵軍在河的彼岸以堅(jiān)固的壕溝防護(hù)自己。 2 establish firmly: 立： customs ~ed by tradition; 由傳統(tǒng)確立的風(fēng)俗; ~ed clauses/ provisions, those (in a constitution(l)) which can be changed only by a special procedure. 確立的憲法條款(須經(jīng)特殊程序始可更動(dòng)者)。 ~ment n