名词
中文翻译：头线
同义词：
['headway', 'lead', 'front']
例句：
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1. Theteam's head track is the fastestin the league.
该队的头线是联盟中最快的。
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2. The new car has a smoothhead track that makes driving comfortable.
新车的头线平滑，驾驶起来很舒适。
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3. Theengineer used his head track to guide theconstruction of the bridge.
工程师利用他的头线指导桥梁的建设。