frontiers
ˈfrʌnˌtiəz
基本解释
n. 边界( frontier的名词复数 ); 边境; 开发地区的边缘; 尚待开发的领域
英文释义
n a wilderness at the edge of a settled area of a country
n an international boundary or the area (often fortified) immediately inside the boundary
n an undeveloped field of study; a topic inviting research and development
词形变化
上一个单词：frontiered
下一个单词：frontiersman