frontiers
/ˈfrʌnˌtiəz/
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📖 中文释义
- 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
🔗 释义中的汉语词
🧩 词形变化
原形 frontier
📘 English Definition（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