名词短语
中文翻译：路线的延伸
同义词：
['extension', 'extension of road']
例句：
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1.The new highway will extend from the citycenter to the countryside.
这条新高速公路将从市中心延伸到乡村。
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2. The company's expansion plansinclude an extension of its service area.
该公司的扩张计划包括扩大其服务区域。
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3. Therailway line was extended to connect two majorcities in the region.
铁路线被延长以连接该地区的两个主要城市。