| 释义 |
frontier/ˈfrʌntiə, frʌnˈtiə/n. 1a the border between two countries 国界，边界 b the district on each side of this 边疆，边陲，国境，边境 2 the limits of attainment or knowledge in a subject (某学科的)成就(或知识)边缘，新领域，前沿 3 (in the US) the borders between settled and unsettled country (美国) (已开发地区和未开发地区之间的)边缘地带；边远地区 □ frontierless adj.[Middle English from Anglo-French frounter, Old French frontiere, ultimately from Latin frons frontis FRONT] |