他在泥泞的小路上行走时穿了一双套鞋来保护他的皮鞋。

He wore ___overshoes to protect his leather shoes while walking on the muddy path.

下雨天，他会在皮鞋外面套上橡胶套鞋以防进水。

On rainy days, he wears rubber ___overshoes over his leather shoes to keep them dry.