Any of various very large extinct aquatic lizards of the genus Mosasaurus, having modified limbs that served as paddles for swimming. These lizards, thought to have been viviparous and carnivorous, may be early ancestors of the modern monitor lizard.是什么意思_Any of various very large extinct aquatic lizards of the genus Mosasaurus, having modified limbs that served as paddles for swimming. These lizards, thought to have been viviparous and carnivorous, may be early ancestors of the modern monitor lizard.在线翻译_英语_读音_用法_例句