名词
中文翻译：复线
同义词：
['double wire', 'double cable']
例句：
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1.The catenary arc is used in the construction of suspension bridges.
猫形曲线用于悬索桥的建设。
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2. The catenary design helps to distribute the load evenly across the bridge.
猫形设计有助于均匀地将负荷分布在桥梁上。
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3.The catenary system is a complex engineering challenge that requires careful planning and execution.
猫形系统是一个复杂的工程挑战，需要仔细规划和执行。