chain pulley collar

例句：

1. 1. The policeman used a chain pulley collar to restrain the suspect.
   警察用链条滑轮式安全带将嫌疑人控制住。
2. 2. The carpenter was wearing a chain pulley collar when he worked on the roof.
   木匠在修屋顶时戴着链条滑轮式安全带。
3. 3.The pilot wore a chain pulley collar while flying in the mountains.
   飞行员在山区飞行时戴了链条滑轮式安全带。