名词
中文翻译：回缩式安全带扣
同义词：
['retractable collar', 'retracting collar']
例句：
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1. The policeman used a retractor collar to restrain the suspect.
警察使用一个回缩式安全带扣来约束嫌疑人。
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2. The driver had to use a retractor collar to fasten his seatbelt.
司机不得不使用一个回缩式安全带扣来系紧他的安全带。
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3. The dog wore a retractor collar for safety reasons.
这只狗为了安全原因戴着一个回缩式安全带扣。