基本解释n.梁龙(古生物恐龙的一种)同根派生 英汉例句用作名词 (n.)Diplodocus had a very small brain and was not smart.梁龙的脑袋非常小,所以它不聪明。英英字典剑桥英英字典 a very large, plant-eating dinosaur with four legs and a very long neck and tail