boot cap

例句：

1. 1.She put on her boots and went out for a walk in the park.
   她穿上靴子，去公园散步。
2. 2. The boot cap was designed to keep the foot warm and dry.
   这个靴子盖设计用来保持脚温暖和干燥。
3. 3.He wore a boot cap under his coat to protect his feet from the cold.
   他穿着一件外套下的靴子盖，以防脚受冷。