western frontier
西部邊疆
frontier region
邊疆地區
frontier guard
邊境警衛
expand the frontier
拓展邊疆
frontier city
邊境城市
new frontier
新邊疆；新境界
frontier trade
邊境貿易
efficient frontier
有效邊界；效率前緣
frontier orbital
前沿軌道
the frontiers of physics
物理學的新領域
frontier towns; frontier law.
邊境城鎮；邊境法規
theories on the frontier of astrophysics.
關於天體物理學新領域的理論
the northern frontier was overrun by invaders.
入侵者佔領了北部邊境。
fortifications that made the frontier inviolable.
邊疆上牢不可破的防禦工事
a wide-open frontier town.
法律不嚴的邊遠小鎮
was hardened to life on the frontier;
頑強地面對前線的生活；
the success of science in extending the frontiers of knowledge.
科學在開拓知識新領域方面所取得的成功。
Sweden has frontiers with Norway and Finland.
瑞典同挪威.芬蘭相鄰。
They are highly interested in the frontiers of science.
他們對於科學的新領域有濃厚的興趣。
The frontier station was starved for food and water.
邊防站急需食物和水。
an army grouping along the frontier
沿邊境集結的軍隊
There were very few border controls on the southwestern frontier.
西南國界上沒幾個邊境檢查站。
the passport opened frontiers to the traveller without let or hindrance.
這一護照使旅行者可以無阻礙地入境。
Areas near the frontier were rough and lawless in the old days.
過去邊遠地區混亂不堪, 而且沒有法律。
The frontier has worked him over inside.
邊疆生活已使他的思想起了很大變化。
Human acts have repercussions far beyond the frontiers of the human world.
人類行爲所產生的影響遠遠超出人類世界的範圍。
But space isn't the only frontier.
但是探索太空並不是唯一的用途。
來源: CNN 10 Student English November 2017 CollectionIt's called the production possibilities frontier, or PPF.
它叫做生產可能性邊界（PPF）。
來源: Economic Crash CourseYou know, we recently crossed the final frontier.
我們最近還跨越了最後一道防線。
來源: Billions Season 1Change cannot be held back by frontiers.
疆土邊境不可能阻止變革。
來源: 100 Classic English Essays for RecitationAnd it's largely an unexplored frontier.
而且那裏基本上是一個未開發的領域。
來源: CNN 10 Student English November 2021 CompilationIt had closed the frontier a year ago for what it said were security reasons.
一年前，委內瑞拉基於安全原因關閉了邊界。
來源: 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識的前沿，然後再擴充到全世界。
來源: 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個技術增長的前沿。他說道。
來源: VOA Standard August 2013 CollectionBut antislavery forces in the North want to keep the frontier free.
而北方的廢奴勢力則要維護邊遠地區的自由。
來源: America The Story of UsI would say that America is probably the last frontier for Indian cuisine.
我會說美國可能是印度美食的最後疆域。
來源: Connection Magazinewestern frontier
西部邊疆
frontier region
邊疆地區
frontier guard
邊境警衛
expand the frontier
拓展邊疆
frontier city
邊境城市
new frontier
新邊疆；新境界
frontier trade
邊境貿易
efficient frontier
有效邊界；效率前緣
frontier orbital
前沿軌道
the frontiers of physics
物理學的新領域
frontier towns; frontier law.
邊境城鎮；邊境法規
theories on the frontier of astrophysics.
關於天體物理學新領域的理論
the northern frontier was overrun by invaders.
入侵者佔領了北部邊境。
fortifications that made the frontier inviolable.
邊疆上牢不可破的防禦工事
a wide-open frontier town.
法律不嚴的邊遠小鎮
was hardened to life on the frontier;
頑強地面對前線的生活；
the success of science in extending the frontiers of knowledge.
科學在開拓知識新領域方面所取得的成功。
Sweden has frontiers with Norway and Finland.
瑞典同挪威.芬蘭相鄰。
They are highly interested in the frontiers of science.
他們對於科學的新領域有濃厚的興趣。
The frontier station was starved for food and water.
邊防站急需食物和水。
an army grouping along the frontier
沿邊境集結的軍隊
There were very few border controls on the southwestern frontier.
西南國界上沒幾個邊境檢查站。
the passport opened frontiers to the traveller without let or hindrance.
這一護照使旅行者可以無阻礙地入境。
Areas near the frontier were rough and lawless in the old days.
過去邊遠地區混亂不堪, 而且沒有法律。
The frontier has worked him over inside.
邊疆生活已使他的思想起了很大變化。
Human acts have repercussions far beyond the frontiers of the human world.
人類行爲所產生的影響遠遠超出人類世界的範圍。
But space isn't the only frontier.
但是探索太空並不是唯一的用途。
來源: CNN 10 Student English November 2017 CollectionIt's called the production possibilities frontier, or PPF.
它叫做生產可能性邊界（PPF）。
來源: Economic Crash CourseYou know, we recently crossed the final frontier.
我們最近還跨越了最後一道防線。
來源: Billions Season 1Change cannot be held back by frontiers.
疆土邊境不可能阻止變革。
來源: 100 Classic English Essays for RecitationAnd it's largely an unexplored frontier.
而且那裏基本上是一個未開發的領域。
來源: CNN 10 Student English November 2021 CompilationIt had closed the frontier a year ago for what it said were security reasons.
一年前，委內瑞拉基於安全原因關閉了邊界。
來源: 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識的前沿，然後再擴充到全世界。
來源: 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個技術增長的前沿。他說道。
來源: VOA Standard August 2013 CollectionBut antislavery forces in the North want to keep the frontier free.
而北方的廢奴勢力則要維護邊遠地區的自由。
來源: America The Story of UsI would say that America is probably the last frontier for Indian cuisine.
我會說美國可能是印度美食的最後疆域。
來源: Connection Magazine探索常見搜尋詞彙