1.It had a small head and a small mouth. The Seismosaurus had round, flat teeth in the front of its mouth, and no teeth in the back.
它的头和嘴都很小，嘴的前部有扁平的圆形牙齿，后部没有牙齿。
2.Seismosaurus had a long neck, a small head and a long thin tail.
地震龙长着长脖子，小脑袋，以及一条细长的尾巴。
3.Seismosaurus walked on four feet. They lived in groups.
地震龙用四只脚走路，走得很慢。