| 例句 |
Birds, fish, and reptiles are all vertebrates.鸟类、鱼类和爬行动物都是脊椎动物。Over millions of years, some of the reptiles developed razor-sharp teeth.有些爬行动物经过数百万年的进化长出了尖利的牙齿。Dinosaurs were probably the first ancestors of amphibious reptiles and fish.恐龙很可能是两栖爬行动物和鱼类的始祖。Many reptiles bury their eggs.许多爬行动物把它们下的蛋掩埋起来。Humans, insects, reptiles, birds, and mammals are all animals.人、昆虫、爬行动物、鸟类和哺乳动物都是动物。Snakes, lizards, and crocodiles are reptiles.蛇、蜥蜴和鳄鱼是爬行动物。Scientists think that birds probably evolved from reptiles.科学家认为，鸟很可能是由爬行动物进化而来的。Fish, birds, insects, reptiles, mammals, and human beings are all animals.鱼、鸟、昆虫、爬行动物、哺乳动物以及人类都是动物。Amphibians evolved into reptiles.两栖类进化成爬行类。All reptiles have to slough their skin to grow.所有爬行动物生长过程中都要蜕皮。 |