他用围巾裹住铃铛，让声音不那么响。

He ___muffled the bell with a scarf to make it less noisy.

她用手套捂着嘴，试图压低自己的笑声。

She tried to ___muffle her laughter with her gloves over her mouth.

爸爸用厚围巾把小女孩裹得严严实实，以防她着凉。

The father ___muffled the little girl in a thick scarf to keep her warm.