frontier
- IPA[ˈfrʌntɪə]
英式
- a line or border separating two countries；the extreme limit of settled land beyond which lies wilderness, especially in reference to the western US before Pacific settlement
noun: frontier, plural noun: frontiers
- 釋義
名詞
- 1. a line or border separating two countries international crime knows no frontiers France's frontier with Belgium
- ▪ the extreme limit of settled land beyond which lies wilderness, especially in reference to the western US before Pacific settlement his novel of the American frontier
- ▪ the extreme limit of understanding or achievement in a particular area the success of science in extending the frontiers of knowledge
