armpad

n.椅子扶手上的小垫子

腋下垫；腋下保护垫

名词

1. He wears an armpad while playing sports to prevent injuries to his arms.
他在进行运动时戴着腋下保护垫，以防止手臂受伤。

2. The armpad provides cushioning and support for the elbow and forearm.
腋下垫为肘部和前臂提供了缓冲和支撑。