单词：heterocercal fins
(heterocercal fin 的复数)
单词：heterocercal fins 相关文章
[00:00.00]Unit 5 Dinosaurs [00:06.48]2.Listen.Read. [00:19.12]Bill:Fossils are boring!I wanted to go to the zoo. [00:25.16]Dean:Bur fossils are how we know about dinosaurs. [00:29.81]They walked the Earth for 150 million years! [00:35.46]Bill:Were an
新派英语第四册
Fish 鱼 Fish live in water and most fish breathe through their gills. 鱼生活在水中，大多数的鱼靠鳃呼吸。 They have fins, scales, eyes and a mouth. 它们有鳍、鳞、眼睛和嘴巴。 They have a body part for hearing. 它们有接
与美国小学生一起学英文第1册
Five species of shark have been put on a wildlife protection list. The move has been made at the final meeting of the Convention on International Trade in Endangered Species in Bangkok, Thailand. The decision restricts cross-border trade in the ocean
英闻天下
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Fingers are pretty nifty. They let you to grab a latte, type on a keyboard, even pull up your pants. But did you ever wonder: where do fingers come from?
Scientific American(九)月
[00:06.77]Nylon material was placed under the Orc's body for the trip. [00:12.56]Holes had been cut for his nose, tail and fins. [00:17.45]A big mechanical arm lifted him into a special container filled with cold seawater. [00:24.97]This travel box m
美国英语听力80篇
yellow-tailed gilthead whose flesh is extremely dainty and whose phosphorescent properties give them away in the midst of the waters; 金尾鲷鱼，肉特别鲜嫩，它们身上的磷光在海水中闪闪发亮； porgies tinted orange, with slende
《海底两万里》中英双语有声读物
This is Scientific American's 60-Second Science, I am Cynthia Graber. This'll just take a minute. Whales and dolphins were molded by evolution to glide through water. Weve been trying to create streamlined designs ourselves for structures such as win
Scientific American(七)月
This is Scientific American 60 Second Science, I'm Steve Mirsky, got a minute? Tens of millions of sharks are killed for their fins each year. It's not just a tragic abuse of the animals, It's bad business. They're basically swimming dollar signs, wh
Scientific American(三)月
Fins 鱼鳍 Fish can swim well with their fins in water. 鱼因为有鳍能在水里畅游。 Also, fish cannot move without fins. 相反的，没有鱼鳍，鱼就不能游了。 Do you know that different fish have different shapes of fins? 你知道
与美国小学生一起学英文第6册
Scientists Explore Underwater Volcanoes 科学家探索海底火山 What covers nearly 29 million square kilometers of this planet beneath the sea? The answer is seamounts. Seamounts are mountains, usually volcanoes, that rise up from the sea floor.
2016年VOA慢速英语(十)月
By Carol Pearson Washington 03 July 2007 A second cervical cancer vaccine has passed a key clinical trial and its maker is seeking to use the vaccine in countries around the world. As VOA's Carol Pearson reports, more women may be able to use this ne
2007年VOA标准英语（七月）
14You are the children of the Lord your God. Do not cut yourselves or shave the front of your heads for the dead, 2for you are a people holy to the Lord your God. Out of all the peoples on the face of the earth, the Lord has chosen you to be his trea
申命记
11The Lord said to Moses and Aaron, 2Say to the Israelites: 'Of all the animals that live on land, these are the ones you may eat: 3You may eat any animal that has a split hoof completely divided and that chews the cud. 4 'There are some that only ch
利未记
DNA Testing to Help Sharks Keep Fins In a study in the journal Endangered Species Research, shark fins on sale were shown to be from a specific region in which shark populations have collapsed, evidence that may help change fishing regulations. Cynth
60秒科学
1、You look like you are 18. 你看起来好像才18岁。(东方人普遍看起来比较年轻) 2、You like to eat chicken feet. 你喜欢吃鸡脚。 3、You suck on fish heads and fish fins. 你吃鱼时会吸鱼头和鱼鳍。(他们都是直接切
阅读空间
Lesson 45 The Flat Fish Called The Sole 第45课 一种叫鳎的比目鱼 Does your mother ever give you fish for dinner? If so, I dare say that you have eaten the fish called the sole. From the shape of its body it is called a flat fish. 小朋友, 妈
英国学生科学读本
The Art of Bouncing Back by Joyce Grenfell I think the center of my faith is an absolute certainty of good. Like everyone else, I get low and there are times when I feel as if I have my fins backwards and am swimming upstream in heavy boots. But even
英语美文
The edges of these bones are fringed with hairy fibres, through which the Right Whale strains the water, 这些须骨的四边都结有许多毛茸茸的筋筋，它就通过这些筋筋来滤水， and in whose intricacies he retains the small fish,
白鲸记