黑变病，皮损常对称分布于暴露部位，呈片状，呈褐-深褐-褐黑色；
Melanosis, skin lesions often symmetrical distributed in the exposed parts, plate shaped, brown - deep brown - brown-black;
褐雨燕：燕科的各种捕食昆虫的黑色小鸟，与蜂鸟有亲缘关系，因其长而强劲的翅膀和快速飞行而著称。
Any of various small, dark, insect-eating birds of the family Apodidae, related to the hummingbirds and noted for their long, strong wings and swift flight.
有红，褐，灰和黑色。
有红，褐，灰和黑色。
应用推荐