护膝部分

例句：

1. 1. He wore a knee brace to protect his injured knee.
   他戴了膝盖护具来保护他的受伤膝盖。
2. 2. She put on her knee pads before the game.
   比赛前，她穿上了膝盖护垫。
3. 3. The athlete used a knee brace during the race to prevent further injury.
   运动员在比赛中使用了膝盖护具以防止进一步受伤。