frontier [ˈfrʌntıə; frʌnˈtıə] 名词
1. frontier:
- frontier
- 国界
- frontier
- 边界
- frontier
- 边疆
- the frontier between China and Russia
- 中俄边界
2. frontier:
- frontier
- 边缘地带
- frontier
- 新领域
- the frontiers of computer science
- 计算机科学的新领域
frontier trade 名词
- frontier trade
- 边境贸易
单语范例（未经PONS编辑处理）
They were called into being by the needs of a war frontier, by a society that could not afford a regular army.
en.wikipedia.org They were especially used in the many frontier areas.
en.wikipedia.org This new emptied frontier will remain in place for the next few centuries.
en.wikipedia.org The fort was by all appearances a standard pallisado fort very typical of the type built on frontiers during the time period.
en.wikipedia.org He promises to find 100 marriageable ladies willing to come to the frontier town (population 152) and stay for a full year.
en.wikipedia.org