常见例句Usually, though, it begins when the outermost layer of skin freezes and becomes pale and numb (often called frostnip). 通常，皮肤外表层受到冷冻，会产生冻伤。皮肤会变得苍白麻木（一般称之为冻结伤）。frostbite frostnip 冻伤 冻疮 返回 frostnip