boundary between [noun] and [noun]
The river forms the boundary between the two countries.
这条河构成了两国之间的边界。
边界；分界线
boundaries — plural of boundary
两个区域之间的分界线或位置。；表示某物极限或范围的线或面；无形事物之间的界限、范围或限制(如个人舒适区、隐私或专业领域与外界之间)。；确定区域界限的线；标记比赛场地边缘的边界或线。
两个区域之间的分界线或位置。
The dividing line or location between two areas.
表示某物极限或范围的线或面
the line or plane indicating the limit or extent of something
无形事物之间的界限、范围或限制(如个人舒适区、隐私或专业领域与外界之间)。
The bounds, confines, or limits between immaterial things (such as one’s comfort zone, privacy, or professional sphere and the realm beyond).
确定区域界限的线
a line determining the limits of an area
标记比赛场地边缘的边界或线。
An edge or line marking an edge of the playing field.
某物的最大可能程度
the greatest possible degree of something
球被击中并触碰或越过边界(无论是否弹跳),通常为击球队分别获得4分或6分。
An event whereby the ball is struck and either touches or passes over a boundary (with or without bouncing), usually resulting in an award of 4 (four) or 6 (six) runs respectively for the batting team.
集合的边界是集合S的闭包中不属于该集合内部的点集。
(of a set) The set of points in the closure of a set S, not belonging to the interior of that set.
The river forms the boundary between the two countries.
这条河构成了两国之间的边界。
用法提示：boundary 是名词，指作为两国之间分界线的河流。
Please stay within the boundaries of the marked area.
请待在标记区域的范围之内。
用法提示：boundaries 是 boundary 的复数形式，此处表示区域的边界范围。
Respecting personal boundaries is important in any relationship.
在任何关系中，尊重个人界限都很重要。
用法提示：boundary 用复数 boundaries 表示抽象的人际界限，仍为名词。
The river forms the boundary between the two countries.
这条河构成了两国之间的边界。
They marked the boundary of the park.
他们标出了公园的边界。
His behavior crossed a boundary.
他的行为越界了。
常用于心理学或人际关系语境。
It's important to set boundaries in a relationship.
在关系中设定界限很重要。
border更侧重国家或行政区域间的实际界线，boundary更通用抽象。
frontier常指国界或未开发地区的端界，带有开拓意味，不如boundary中性。
edge强调物理物体的边缘，boundary更抽象。
limit强调不可逾越的限制点，boundary可指分界区域。
bound常以复数bounds出现，与boundary几乎同义但较古老。
grammar · medium
易错句子The river boundaries the two provinces.
正确表达The river forms the boundary between the two provinces.
学习者将名词"boundary"误用作动词。英语中"boundary"是名词，不能直接用作及物动词。
grammar · medium
易错句子We need to respect each other's boundary.
正确表达We need to respect each other's boundaries.
"boundary"表示"界限"时为可数名词，通常使用复数形式（boundaries）来指代个人空间或规则的多重界限。
与边界相对，指区域内部。
与边界相对，指区域的中心点或中央部分。
与边界相对，指物体的最内部或最重要的部分。
与边界相对，指两个边界之间的中心区域。
boundary 多指抽象或地理上的分界线，而 border 特指政治领土之间的边界，如国界或州界。
boundary 指空间或范围的界线，而 limit 强调数量、程度或时间上的上限。
边界线
The boundary line between the two countries was established in 1923.
两国之间的边界线于1923年确立。
边界条件
This equation has a unique solution under the given boundary conditions.
在给定的边界条件下，该方程有唯一解。
边界争端
The neighboring countries have a long-standing boundary dispute over the mountain range.
邻国之间长期存在关于山脉的边界争端。
…之间的分界线
There is a clear boundary between professional and personal life.
职业生活和个人生活之间有明确的界限。
界标
The hikers found an old boundary marker along the trail.
徒步旅行者在小径上发现了一个古老的界标。
边界层
The boundary layer of air near the surface affects wind patterns.
地表附近的空气边界层影响风型。
bound + -ary
bound (root)
un- + bound + -ed
bound + -less
突破界限
This artist constantly pushes the boundaries of modern art.
这位艺术家不断突破现代艺术的界限。
跨越界限
Their friendship crossed cultural boundaries.
他们的友谊跨越了文化界限。
没有界限
Her kindness knows no boundaries.
她的善良没有界限。
Dictionary facts from ECDICT, WIKTIONARY.