frontier
🇺🇸
/frʌnˈtɪr/
🇬🇧
/ˈfrʌntɪə(r)/
noun
R
a border between countries or areas
The town sits on the frontier between two nations.
這個城鎮位於兩個國家的邊境上。
R
the wild, unsettled land at the edge of a settled area
Pioneers moved west to live on the American frontier.
拓荒者向西遷移，在美國的邊疆地區生活。
R
the farthest limit of knowledge or progress
Scientists are pushing the frontier of medical research.
科學家們正在推動醫學研究的前沿。
translation
邊界, 邊疆, 前沿
詞形變化
Plural
frontiers