n. 两栖动物( amphibian的复数形式 ); 水陆两用车; 水旱两生植物; 水陆两用飞行器

n. a flat-bottomed motor vehicle that can travel on land or water

n. an airplane designed to take off and land on water

n. cold-blooded vertebrate typically living on land but breeding in water; aquatic larvae undergo metamorphosis into adult form