名词
中文翻译：中线
同义词：
['central line', 'median line']
例句：
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1.The middle line of the road is clear enough for cars to pass through.
这条道路的中线足够清晰，汽车可以通行。
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2.The teacher drew a middle line on the blackboard to help us understand the concept.
老师在黑板上画了一条中线，帮助我们理解这个概念。
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3. The artist carefully marked the middle line on the canvas to create symmetry.
艺术家仔细地在画布上标出了中线，以创造对称效果。