保护肩部的衬垫

例句：

1. 1. She placed a pad under the table to protect it from scratches.
   她把一个垫子放在桌子下面来保护它免受刮擦。
2. 2. The cushion on the chair is soft and comfortable.
   椅子的垫子很软，很舒服。
3. 3. The cushioning of the tires helps absorb impact during driving.
   轮胎的缓冲层有助于吸收行驶过程中的冲击。