elbow cover opener

例句：

1. 1.This elbow pad is designed to protect your elbow from bumps and scrapes.
   这个肘垫设计用来保护你的肘部免受磕碰和刮伤。
2. 2. The athletes used an elbow protector during the race to prevent injuries.
   运动员们在比赛中使用了肘部保护器以防止受伤。
3. 3. The worker used a elbow guard to protect his hands while working on the machine.
   工人在操作机器时使用了肘部护具来保护他的手。