1
boundary line between sth and sth
表示两者之间的分界线
The river forms the boundary line between the two countries.
这条河形成了两国之间的边界线。
边界线；疆界线
先理解核心含义，再看它在真实句子里的用法。
边界线；疆界线
a line that marks the edge or limit of an area, especially an official border
The river forms the boundary line between the two countries.
这条河形成了两国之间的边界线。
表示边界的线
a line that indicates a boundary
The boundary line between the two farms is marked by a row of old trees.
两座农场之间的边界线由一排老树标出。
Please stay behind the boundary line while waiting for the train.
等火车时请站在边界线后面。
The referee checked whether the ball had crossed the boundary line.
裁判检查了球是否越过了边界线。
表示两者之间的分界线
The river forms the boundary line between the two countries.
这条河形成了两国之间的边界线。
表示划定或确立边界线
They drew a boundary line to separate the properties.
他们画了一条边界线来分隔房地产。
表示越过边界线
It is illegal to cross the boundary line without permission.
未经许可越过边界线是非法的。
表示用某物标记边界线
The boundary line is marked with white stones.
边界线用白色石头标记。
Not this
The team established boundary line between the two countries.
Use this
The team established a boundary line between the two countries.
boundary line 是可数名词短语，用作单数时必须加冠词 a 或 the。这里需要不定冠词 a 表示一条边界线。
Not this
The boundary line agreement was signed yesterday.
Use this
The boundary-line agreement was signed yesterday.
当 boundary line 作为复合形容词修饰名词时，需要加连字符，写成 boundary-line，以表示它是一个整体修饰语。
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