他比赛时戴护膝来保护自己。

He wears ___knee ___pads to protect himself during the game.

她在膝盖上戴了护垫以防跌倒时受伤。

She wears ___pads on her knees to prevent injuries when falling.

我在便利贴上记下了购物清单。

I wrote down the shopping list on a ___pad of sticky notes.

狗狗的肉垫让它在粗糙的地面上行走时不会受伤。

The dog's ___pads protect its feet when walking on rough surfaces.