pad

The football player put on his shoulder pads and helmet before entering the field.

(Chinese) 橄榄球运动员在进入球场前戴上了护肩和头盔。

Use a mouse pad to protect your desk surface and help the optical sensor work better.

(Chinese) 使用鼠标垫来保护桌面，并帮助光电传感器更好地工作。