air bladder
柯林斯詞典
1. N an air-filled sac, lying above the alimentary canal in bony fishes, that regulates buoyancy at different depths by a variation in the pressure of the air 魚(yú)鰾 (Also called swim bladder)[ichthyol]
返回 air bladder
1. N an air-filled sac, lying above the alimentary canal in bony fishes, that regulates buoyancy at different depths by a variation in the pressure of the air 魚(yú)鰾 (Also called swim bladder)[ichthyol]