frontier boundary border 这三者之间有什么区别
1.
boundary 指地图上明确的界限，汉语一般说“边界线”，如：
the boundary between France and Germany
2.
border 指沿边界线延伸的地区，汉语一般说“边境”，如：
the Franco-German border
3.
frontier 的意思是“靠外国的边界”
The soldiers guarded the frontiers of the country.
Sweden has frontiers with Norway and Finland.
boundary 、border、frontier的区别和用法
区别和用法：boundary， border， frontier， limitThese nouns all denote a line or an area separating one piece of territory from another. A 所有这些名词都指分隔一地域与另一地域的线或地区。boundary is a limiting line: boundary 是限制线：A stone wall marked the boundary between the two farms. A 石墙是两个农场的分界线。 border is a line that separates political entities: Border 是将政治实体分离的界限：Customs officers inspected our luggage when we crossed the border. 当我们过境时海关官员检查了我们的行李。Frontier denotes the part of a country that faces toward or fronts an adjoining country: Frontier 意指一国中朝向或面对邻国的部分：“that long [Canadian] frontier from the Atlantic to the Pacific Oceans, guarded only by neighborly respect and honorable obligations” (Winston S. Churchill). “那条 自大西洋至太平洋的长边界线， 仅出于邻国的尊敬和高尚义务守护着” （温斯顿·S·丘吉尔）。Limit denotes a boundary that surrounds an area: Limit 意指包围一地区的界线：Cars cannot exceed 35 miles per hour within city limits. 在市区线以内车速不能超过每小时35英里1.boundary 指地图上明确的界限,汉语一般说“边界线”,如： the boundary between France and Germany 2. border 指沿边界线延伸的地区,汉语一般说“边境”,如： the Franco-German border 3.frontier 的意思是“靠外国的边界” The soldiers guarded the frontiers of the country. Sweden has frontiers with Norway and Finland. 总结：border和frontier均可用来指将两国分开的界限，但意思不完全相同。frontier常指有防卫的边界，设有护照、签证和海关检查。如:The frontier is protected by minefields and an electric fence.边境由雷区和电网防护。border是较一般性的词，用来指国家或州之间的任何分界，也可以指某事物的“边缘，边际”如：We camped on the border of a lake.我们在河边扎下营帐。We lived ten miles from the Russia border.我们住在俄罗斯边界10英里处。boundary用来说比较小的单位（如：farms,towns,parishes或counties）的分界。The boundary between the farms follows the line of the river.这两个农场以河为界。
