名词
中文翻译：速度圈
同义词：
['speed circle', 'speed ring', 'speed band', 'speed zone']
例句：
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1. The car was caught in the speed circle at the intersection.
这辆车在交叉口被速度圈困住了。
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2.The driver had to slow down to avoid hitting the speed circle.
司机不得不减速以避免撞到速度圈。
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3. The police set up a speed circle around the accident site to prevent further accidents.
警方在事故现场周围设置了速度圈，以防止进一步的事故。