标签：生物角膜 相关文章
大卫盖罗通过潜水艇拍下的影片把我们带到了地球最黑暗，最险恶同时也最美丽的生物栖息地。这里是海洋深处的峡谷和火山脊，这里怪诞，适应力强而且数量惊人的生命。
TED公开课:潜入深渊
15. What researchers such as Ransom Myers and Boris Worm have shown is just how fast things are changing. 【分析】复合句。本句中 what 引导主语从句，其中 such as Ransom Myers and Boris Worm 表列举，is 是系动词。 【译文】
考研英语长难句讲解
[全屏观看] 点击右键- 另存为 可保存这个Flash影片 用滑鼠把黄色的格子全部跳成粉红色的!!要避开水母和其他生物...如果撞到的话就GAME OVER了 操作指南：鼠标控制
海绵宝宝游戏
Hi, its Kasey-Dee Gardner, in this weekend Why Tell Me Why will answer an interesting viewer question. The viewer wants to know why certain species die after they reproduce. So, we're here to find out the answer. Urn, so there are a bunch of species,
自然百科2009年
Science and technology 科学与技术 Splay-footed, not flat-footed 不是扁平足而是八字足 A new fossil shows that evolution does not always mean change 新发现的化石显示，进化并不总意味着变化 Palaeontology 古生物学 The
经济学人科技系列
热带雨林 Tropical Rainforest abounding adj. 丰富的，大量的 accelerate v.加速，促进 arce n. 英亩 alkaloid n. 生物碱 an intricate and fragile system 复杂脆弱的系统 angler n.钓
英文语法词汇
雅思阅读考试备考中很重要的一个部分就是对雅思阅读文章题材的熟悉和掌握。 雅思阅读考试的文章通常分为生物、地理和社会科学三类。雅思文章的出处有很多，其中最实用的、便于积累背
雅思英语
More than 100 Nobel laureates have signed a letter urging Greenpeace to end its opposition to genetically modified organisms (GMOs). The letter asks Greenpeace to cease its efforts to block introduction of a genetically engineered strain of rice that
英语新闻
Only about one bone in a billion, it is thought, ever becomes fossilized. 据认为，在10亿根骨头当中，只有大约l根能变成化石。 If that is so, it means that the complete fossil legacy of all the Americans alive todaythat's 270 mill
万物简史
From time to time certain strains of virus return. 有几种病毒不时重复出现。 A disagreeable Russian virus known as H1N1 caused severe outbreaks over wide areas in 1933, then again in the 1950s, and yet again in the 1970s. 一种名叫H1N1的
万物简史
The most rampantly infectious organism on Earth, a bacterium called Wolbachia, doesn't hurt humans at all, 地球上最具传染性的生物，一种名叫沃尔巴克体的细菌，根本有伤害人类， or, come to that, any other vertebratesbut
万物简史
One of the odder aspects of infection is that microbes that normally do no harm at all sometimes get into the wrong parts of the body and go kind of crazy, 感染有许多古怪的方面。其中之一是，有些在正常情况下完全无害的微生
万物简史
In 1997 scientists successfully activated some anthrax spores that had lain dormant for eighty years in a museum display in Trondheim, Norway. 1997年，科学家们成功地激活了已经在挪威特隆赫姆博物馆休眠了80年之久的一些炭疽
万物简史
We now know that there are a lot of microbes living deep within the Earth, many of which have nothing at all to do with the organic world. 我们现在知道了，有大量微生物生活在地球内部的深处，其中许多与普通的有机世界毫
万物简史
They have been found living in boiling mud pots and lakes of caustic soda, deep inside rocks, at the bottom of the sea, 我们还发现细菌生活在沸腾的泥潭里和烧碱池里，岩石深处，大海底部， in hidden pools of icy water in t
万物简史
Bacteria do it all the time without fuss, and thank goodness, for no larger organism could survive without the nitrogen they pass on. 而细菌一直在不慌不忙地干这件事。谢天谢地，要是没有它们来传送氮，大的生物就活不下
万物简史
It has been suggested that the cyanobacteria at Shark Bay are perhaps the slowest-evolving organisms on Earth, and certainly now they are among the rarest. 据认为，沙克湾里的叠层石也许是地球上进化最慢的生物，也肯定是现在
万物简史
Coincident with concerns about the accelerating loss of species and habitats has been a growing appreciation of the importance of biological diversity，the number of species in a particular ecosystem，to the health of the Earth and human well-being
托福英语
TPO12 Lecture 1 6. What does the professor mainly discuss?（主旨题） A. How genes control human development. B. Why various types of human cells divide at different rates. C. How human chromosomes differ from one another. D. Why most human cells
托福英语