名词
中文翻译：Unknown
同义词：
['leading line', 'leading rod', 'lead rod']
例句：
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1. The engineer used a primoline to guide the construction crew.
工程师使用一条前导线来引导施工队伍。
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2. The car was fitted with a primoline for better handling.
汽车安装了一根前导杆以改善操控性能。
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3. The scientist used a primoline to measure the distance between two points.
科学家用一根前导杆测量两点之间的距离。