名词
中文翻译：延伸
同义词：
['prolongation', 'elongation']
例句：
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1.The train extended its journey to the nextcity.
火车延长了它的旅程到下一个城市。
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2. The company's expansion plans havebeen extended for another year.
公司的扩张计划已经延长了一年。
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3. The bridge is designedto extend over the river and connect twosides of the town.
这座桥被设计来跨越河流，连接城镇的两边。