western frontier
西部边疆
frontier region
边疆地区
frontier guard
边境警卫
expand the frontier
拓展边疆
frontier city
边境城市
new frontier
新边疆；新境界
frontier trade
边境贸易
efficient frontier
有效边界；效率前缘
frontier orbital
前沿轨道
the frontiers of physics
物理学的新领域
frontier towns; frontier law.
边境城镇；边境法规
theories on the frontier of astrophysics.
关于天体物理学新领域的理论
the northern frontier was overrun by invaders.
入侵者占领了北部边境。
fortifications that made the frontier inviolable.
边疆上牢不可破的防御工事
a wide-open frontier town.
法律不严的边远小镇
was hardened to life on the frontier;
顽强地面对前线的生活；
the success of science in extending the frontiers of knowledge.
科学在开拓知识新领域方面所取得的成功。
Sweden has frontiers with Norway and Finland.
瑞典同挪威.芬兰相邻。
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。
The frontier station was starved for food and water.
边防站急需食物和水。
an army grouping along the frontier
沿边境集结的军队
There were very few border controls on the southwestern frontier.
西南国界上没几个边境检查站。
the passport opened frontiers to the traveller without let or hindrance.
这一护照使旅行者可以无阻碍地入境。
Areas near the frontier were rough and lawless in the old days.
过去边远地区混乱不堪, 而且没有法律。
The frontier has worked him over inside.
边疆生活已使他的思想起了很大变化。
Human acts have repercussions far beyond the frontiers of the human world.
人类行为所产生的影响远远超出人类世界的范围。
But space isn't the only frontier.
但是探索太空并不是唯一的用途。
来源: CNN 10 Student English November 2017 CollectionIt's called the production possibilities frontier, or PPF.
它叫做生产可能性边界（PPF）。
来源: Economic Crash CourseYou know, we recently crossed the final frontier.
我们最近还跨越了最后一道防线。
来源: Billions Season 1Change cannot be held back by frontiers.
疆土边境不可能阻止变革。
来源: 100 Classic English Essays for RecitationAnd it's largely an unexplored frontier.
而且那里基本上是一个未开发的领域。
来源: CNN 10 Student English November 2021 CompilationIt had closed the frontier a year ago for what it said were security reasons.
一年前，委内瑞拉基于安全原因关闭了边界。
来源: BBC Listening August 2016 CollectionIt means expanding the frontiers of knowledge, your own, and then the world.
它意味着拓展你自己知识的前沿，然后再扩充到全世界。
来源: Celebrity High School Opening SpeechAfrica could really be the next frontier for technology growth, he said.
非洲有可能真的是下一个技术增长的前沿。他说道。
来源: VOA Standard August 2013 CollectionBut antislavery forces in the North want to keep the frontier free.
而北方的废奴势力则要维护边远地区的自由。
来源: America The Story of UsI would say that America is probably the last frontier for Indian cuisine.
我会说美国可能是印度美食的最后疆域。
来源: Connection Magazinewestern frontier
西部边疆
frontier region
边疆地区
frontier guard
边境警卫
expand the frontier
拓展边疆
frontier city
边境城市
new frontier
新边疆；新境界
frontier trade
边境贸易
efficient frontier
有效边界；效率前缘
frontier orbital
前沿轨道
the frontiers of physics
物理学的新领域
frontier towns; frontier law.
边境城镇；边境法规
theories on the frontier of astrophysics.
关于天体物理学新领域的理论
the northern frontier was overrun by invaders.
入侵者占领了北部边境。
fortifications that made the frontier inviolable.
边疆上牢不可破的防御工事
a wide-open frontier town.
法律不严的边远小镇
was hardened to life on the frontier;
顽强地面对前线的生活；
the success of science in extending the frontiers of knowledge.
科学在开拓知识新领域方面所取得的成功。
Sweden has frontiers with Norway and Finland.
瑞典同挪威.芬兰相邻。
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。
The frontier station was starved for food and water.
边防站急需食物和水。
an army grouping along the frontier
沿边境集结的军队
There were very few border controls on the southwestern frontier.
西南国界上没几个边境检查站。
the passport opened frontiers to the traveller without let or hindrance.
这一护照使旅行者可以无阻碍地入境。
Areas near the frontier were rough and lawless in the old days.
过去边远地区混乱不堪, 而且没有法律。
The frontier has worked him over inside.
边疆生活已使他的思想起了很大变化。
Human acts have repercussions far beyond the frontiers of the human world.
人类行为所产生的影响远远超出人类世界的范围。
But space isn't the only frontier.
但是探索太空并不是唯一的用途。
来源: CNN 10 Student English November 2017 CollectionIt's called the production possibilities frontier, or PPF.
它叫做生产可能性边界（PPF）。
来源: Economic Crash CourseYou know, we recently crossed the final frontier.
我们最近还跨越了最后一道防线。
来源: Billions Season 1Change cannot be held back by frontiers.
疆土边境不可能阻止变革。
来源: 100 Classic English Essays for RecitationAnd it's largely an unexplored frontier.
而且那里基本上是一个未开发的领域。
来源: CNN 10 Student English November 2021 CompilationIt had closed the frontier a year ago for what it said were security reasons.
一年前，委内瑞拉基于安全原因关闭了边界。
来源: BBC Listening August 2016 CollectionIt means expanding the frontiers of knowledge, your own, and then the world.
它意味着拓展你自己知识的前沿，然后再扩充到全世界。
来源: Celebrity High School Opening SpeechAfrica could really be the next frontier for technology growth, he said.
非洲有可能真的是下一个技术增长的前沿。他说道。
来源: VOA Standard August 2013 CollectionBut antislavery forces in the North want to keep the frontier free.
而北方的废奴势力则要维护边远地区的自由。
来源: America The Story of UsI would say that America is probably the last frontier for Indian cuisine.
我会说美国可能是印度美食的最后疆域。
来源: Connection Magazine探索常用高频词汇