名词
中文翻译：分界线
同义词：
['boundary', 'demarcation']
例句：
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1. The divider calipers were used to mark the boundaries of the new construction site.
分界线尺用来标记新建筑工地的界限。
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2. The boundary between our two countries is marked by a line of fences.
我们两国之间的边界由一排栅栏标出。
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3. The demarcation of the border was a difficult task that required careful planning and execution.
边界划分是一项困难的任务，需要仔细规划和执行。