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

• For11 years, I was the host of the public television series Scientific American Frontiers.
  11年来，我一直是大众电视系列片‘美国科学前沿’的主持人。
• In the 20th century political frontiers became a central influence on economic life.
  20世纪，政治边界对经济生活产生了重要影响。
• America will lead the world toward shared peace and prosperity, and the far frontiers of science and technology.
  美国要带领世界缔造共同的和平和繁荣，攀登科技的高峰。
• There are no new frontiers within our borders.
  在我们的国界内已经没有前线了。
• You are exploring the frontiers in science.
  你在探究科学的新领域。
• It is through education that we expand the frontiers of knowledge.
  通过教育，我们扩大了知识的阵地。
• 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。
• 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。
• 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。
• There is no way to maintain the frontiers of freedom without cost and commitment and risk.
  没有代价、承诺和风险，就不可能维持自由的边界。