单词：primitive land animal
单词：primitive land animal 相关文章
The Aldens spent all their time getting the boxcar ready for business. Jessie and Violet made good use of the leftover boards Henry brought back from Seeds Hardware Store. In no time, they had added four new shelves to the boxcar to store the food, d
22 The Animal Shelter Mystery
In the autumn, by a tremendous, exhausting effort--for the harvest had to be gathered at almost the same time--the windmill was finished. 到了秋天，动物们在保证完成收割的情况下，竭尽全力，终于使风车竣工了，而且几乎
动物农场 Animal Farm
Fossils found at Weng'an in Guizhou Province are regarded as the oldest ones to be found in the country, if not the world. Recently, a group of paleontologists gathered at the site to call for more protection of animal fossils that could provide clue
2017CRI中国国际广播电台
Youd think an animal that hops would know how to land. But for a kind of frog, thats not the case. Imagine trying to catch a frog. You reach and they jump, only to land gracefully on their feet a few feet away. It was thought that all frogs moved thi
Scientific American(七)月
These were big but really fast hunters. They were as bad as it got for a while. 这些巨大但速度很快的猎手。有一段时间它们要多坏有多坏。 Albertosaurus would have been a very fearsome predator. 阿尔伯特龙会是非常可怕的
侏罗纪搏击俱乐部
Long before the land grew roads and towns, long before the first Westerners arrived, long before humans here even had a word for art, the rock artists of Australia were drawing the Dreamtime. The Dreamtime for the aboriginal people is their story of
国家地理2008年
Frogs from an ancient lineage reveal that the amphibians developed the ability to jump before they had mastered landing Youd think an animal that hops would know how to land. But for a kind of frog, thats not the case. Imagine trying to catch a frog.
60秒科学
Searching for Animal Disease Transmission Researchers are not waiting for the next new disease to emerge. Theyre studying our near and distant primate relatives to try to prevent future epidemics. HIV/AIDS is a well-known zoonotic disease, an illness
VOA标准英语2012年(八月)
Long before the land grew roads and towns, long before the first Westerners arrived, long before humans here even had a word for art, the rock artists of Australia were drawing the Dreamtime. The Dreamtime for the aboriginal people is their story of
自然百科2008年
Nature's latest report from the world of paleontology challenges the assumptions made by everyone until now about when animals first walked the earth. This is footprint of early tetrapods. We have here, for example, digits, impressions, and something
自然百科2010年
This was so great that it would have taken a lot of failures to outweigh it. 这个优越性太显著了，它足以使许多不足之处显得不足为道。 And in many ways the animal method of doing things was more efficient and saved labor. 另外
动物农场 Animal Farm
Snowball had made a close study of some back numbers of the 'Farmer and Stockbreeder' which he had found in the farmhouse, and was full of plans for innovations and improvements. 斯诺鲍曾在庄主院里找到一些过期的《农场主和畜牧业者
动物农场 Animal Farm
SCIENCE IN THE NEWS - Mercury in Fish / Life on Land / The Goldman Environmental Prize By Broadcast: Tuesday, May 11, 2004 (THEME) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm B
科技之光