frontiers

英 [ˈfrʌntɪəz]

美 [frənˈtɪrz]

n.  国界; 边界; 边境; (尤指19世纪美国西部的)开发地区边缘地带，边远地区; (学科或活动的)尖端，边缘
frontier的复数

Collins.2

柯林斯词典

• N-COUNT 边界;边境
  Afrontieris a border between two countries.
  1. It wasn't difficult then to cross the frontier.
     那时穿越边境并不困难。

in AM, usually use 美国英语通常用border


• N-COUNT 西部边疆,边远地区(指 20 世纪前美国西部欧洲移民尚未定居的部分)
  When you are talking about the western part of America before the twentieth century, you usefrontierto refer to the area beyond the part settled by Europeans.
  1. ...a far-flung outpost on the frontier.
     远驻西部边疆的前哨
• N-COUNT (尤指知识的)前沿，尖端，新领域
  Thefrontiersof something, especially knowledge, are the limits to which it extends.
  1. ...pushing back the frontiers of science.
     推进科学前沿
  2. ...technological frontiers.
     技术尖端

双语例句

• Research at the frontiers of life science cannot be done without the use of these techniques.
  没有这些技术，生命科学的尖端研究便无法进行。
• Researchers are pushing back the frontiers and opening doors to reveal why things happen and how things work.
  研究者们拓展了其研究领域，介绍并揭示了事物发生的原因和机理。
• There are no new frontiers within our borders.
  在我们的国界内已经没有前线了。
• Community leaders want to strengthen controls at external frontiers
  社区领导想要加强对小区外围的管理。
• Conclusion Basis of faunal distribution and ecological studies of mosquitoes in frontiers of Russia and Northeast China were provided.
  结论为东北中俄边境地区蚊虫的区系和生态研究提供了依据。
• Naked aggression and an attempt to change frontiers by force could not go unchallenged.
  公然的侵略和企图用武力改变边界的行径是不能置之不理的。
• They are highly interested in the frontiers of science.
  他们对于科学的新领域有浓厚的兴趣。
• Young people in China and throughout the world will lead us to frontiers that we cannot imagine today.
  中国乃至全世界的年轻人将带领我们走向我们今天无法想像的科技前沿。
• From this vantage point, the region expanded the health agenda to cover new frontiers.
  欧洲区域再接再厉，扩大了卫生议程，开拓了新的疆域。
• A Thousand Leagues she tramped on the errands of war,| frontiers and hills she crossed like a bird in flight.
  万里赴戎机，关山度若飞。（《木兰诗》）