Dinosaurs Big and Small

DINOSAURS BIG and Small

大恐龙小恐龙

Everyone knows, some dinosaurs were BIG! How big? One of the biggest of all dinosaurs was the huge beast calledDiplodocus.

大家都知道恐龙很大个但是到底多大呢？最大的恐龙之一是巨兽，它叫梁龙

You are probably about 4 feet tall, more or less. From the tip of its snout to the end of its tail, a Diplodocuswas 89 feet long. That's longer than 22 kids laid out, head tofoot. A kid weighs about 75 pounds. Diplodocus weighed about 24, 000 pounds-as much as 320 kids together!

它大约四英尺高，从鼻尖到尾尖，梁龙有 89 英尺长，那相当于 22 个孩子头和脚连在一起的长度。 一个孩子中75 磅，梁龙要重两万四千磅，相当于 320 个孩子的重量 哇

The blue whales that swim in the oceanstoday are the largest animals ever. But the largest animals that have ever lived on land werea group of dinosaurs called the sauropods. Diplodocus is onetype of sauropod. All sauropods were plant eaters. They had small heads, longnecks and tails, and four strong legs.

海洋中的鲸鱼是最大的动物，但是世界上曾经存在的最大动物是蜥脚类恐龙， 梁龙是属于它们当中的一员，所有的蜥脚类恐龙都是素食动物小脑袋，长脖子，长尾巴，四条腿又粗又壮

How do we know how big a sauropod was? If we have enough bones from a dinosaur's skeleton, it is not hard to measure how long the animal was. Butfiguring out how much a dinosaur weighed is not so easy. You can weigh yourself on a scale. No one can put asauropod on a scale. And even if we could, we have onlythe fossil bones to go on. We cannot know exactly howheavy a dinosaur was. Scientists can only study the skeletonand make a good guess about how much fat and musclethe living animal might have had.

我们是如何知道恐龙多大的呢？我们知道恐龙骨架多少块骨头，要计算出恐龙多大也不难，但是要计算恐龙多种却不简单。 你可以自己称体重，但是没人把蜥脚类恐龙放到称上，即使我们能，我们只有化石骨头，我们无法得知它们多重，科学家只能研究骨架，猜测这个曾经活在世上的动物，到底有多少脂肪和肌肉

One of the longest sauropods ever found is the giganticSeismosaurus. It was more than 130 feet long. A school busis about 30 feet long. Seismosaurus was longer than 4 schoolbuses parked end to end. Brachiosaurus was a sauropod with thick, sturdy bones. It was one of the heaviest dinosaurs. Brachiosaurus's front legs were longer than its hind legs. It held its neck and head high. It could nibble on leavesat the tops of the tallest trees.

迄今为止发现的最长的蜥脚类恐龙是巨大的地震龙，有130多英尺那么长，一辆校车约有30英尺长，地震龙要比四辆校车头尾连在一起还要长。 腕龙是蜥脚类恐龙的一种，它们的脚又粗又壮，是最重的恐龙之一，腕龙的前脚比后脚长，脖子伸得长 脑袋挺得高，可以够到最高树上最高处的树叶