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

• With open frontiers and lax visa controls, criminals could cross into the country without restraint.
  由于边境开放和签证管理松懈，罪犯可以毫无限制地进入这个国家。
• You are exploring the frontiers in science.
  你在探究科学的新领域。
• But we will push the frontiers.
  但我们将继续推进它的研究。
• On the frontiers they met fierce resistance and defeat that spelled eventual disaster.
  在边界地区他受到了猛烈的抵抗，失败了，这一失败引起了灾难性后果。
• 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。
• But when the federal government builds walls around industries, it also blocks the exploration of new frontiers.
  但是，当美国联邦政府在美国各行各业周围建立起围墙的时候，它也挡住了向新疆域的探索。
• 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。
• There are no new frontiers within our borders.
  在我们的国界内已经没有前线了。
• 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》）
• They performed meritorious deeds in the fight to defend the frontiers of the motherland.
  在保卫祖国边疆的战斗中他们立了功。