brake gear

例句：

1. 1.The brake gear is essential for stopping the car in an emergency.
   制动齿轮对于紧急情况下停车至关重要。
2. 2. The engineers replaced the old brake gear with new ones.
   工程师们用新的制动齿轮替换了旧的。
3. 3. The brake gear is designed to provide a smooth and safe stop.
   制动齿轮设计用来提供平稳且安全的停止。