approach trench の意味「連絡壕」

意味	連絡壕交通壕 A trench providing protected passage between the rear and front lines of a defensive position.

approach trenchのWordNet

意味	a trench that provides protected passage between the rear and front lines of a defensive position 防御陣地の後方と前線の間に保護された通路を提供する塹壕
同義語	communication trench
上位語	trench溝