我用鸡毛掸子打扫书架上的灰尘。

I use ___dusters to clean the dust off the bookshelf.

她在打扫阁楼时穿了一件防尘衣。

She wore her ___dusters while cleaning the attic.

我们在公园里看到几只鸟正在沙地上打滚，它们是在用沙子清洁羽毛。

We saw some ___birds rolling in the sand at the park to clean their feathers.