另外，还要确保最外面的大衣是用致密结构的防水材料制成的。

Also, make sure outerwear is made of water resistant and tightly knit material.

youdao

另外，还要确保最外面的大衣是用致密结构的防水材料制成的。

Also, make sure outerwear is made of water resistant and tightly knit material.

youdao