frontier
柯林斯词典
1. N-COUNT When you are talking about the western part of America before the twentieth century, you use frontier to refer to the area beyond the part settled by Europeans. (20世纪前美国) 西部边疆
...a far-flung outpost on the frontier. …远驻西部边疆的一个哨所。
2. N-COUNT Thefrontiers of something, especially knowledge, are the limits to which it extends. (尤指知识的) 前沿
...pushing back the frontiers of science. …推进科学前沿。
3. N-COUNT A frontier is a border between two countries. 国界
It wasn't difficult then to cross the frontier. 那时候穿越国界并不难。
返回 frontier
frontier /ˈfrʌntɪə, frɒn-/ (frontiers)
剑桥词典
- C2 [ 可数名词：有复数形式的名词 ]
- The frontier is patrolled by border guards .
- At the frontier, there were people pestering tourists for cigarettes , food or alcohol .
- Two armed men were caught trying to cross the frontier at night .
- Air pollution is no respecter of national frontiers.
- The president pledged to respect the existing frontiers between the two countries .
a border between two countries
国境，边境
Some of the frontier between Germany and Poland follows the course of the river Oder. 德国与波兰的部分边界是沿奥德河划分的。
Nepal has frontiers with both India and China . 尼泊尔与中国和印度都接壤。
They lived in a town close to the frontier. 他们居住在一个离边界很近的城镇。
[ 单数名词 ]
the western US where settlers began to move to live in the 19th century
（十九世纪时定居者开始搬入并居住的美国西部）前沿地带
The Homestead Act of 1862 gave free land to pioneers who settled the frontier. 1862年的《宅地法》免费把土地给予到西部前沿地区定居的先驱者。
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