名词
中文翻译：环形电路
同义词：
['circuit', 'loop', 'loopy', 'zigzag']
例句：
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1.The roundabout circuit is a popular route for cycling.
环形电路是骑自行车的热门路线。
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2.The engineer designed the roundabout circuit to improve traffic flow.
工程师设计了环形电路以改善交通流量。
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3. The roundabout circuit was used to prevent accidents on the busy road.
环形电路被用来防止繁忙道路上的事故。