标签：人工培育 相关文章

VOA标准英语2014--Scientists Will Test New Drugs on Artificial Micro-Organs 科学家将在人工微型器官上测验新药物

Scientists Will Test New Drugs on Artificial Micro-Organs 科学家将在人工微型器官上测验新药物 Testing new drugs on lab animals is not the same as testing them on the species they are intended for. But in early stages of research, test

发表于:2018-12-08 / 阅读(84) / 评论(0) 分类 VOA标准英语2014年(四月)

美国有线新闻 CNN 平昌冬奥会或成史上最冷 人工造雪确保比赛顺利进行

AZUZ: Moving north from Taiwan to where the 2018 Olympic Winter Games are just a day away. It's cold. Pyeongchang, South Korea, is surrounded by mountains. The forecast for the day of the opening ceremonies predicts high temperatures will be around 4

发表于:2018-12-20 / 阅读(43) / 评论(0) 分类 CNN美国有线新闻2018年3月

英语听力：自然百科 大堡礁：自然奇迹—10

But even he has his limits. On the reef, there seem to be an almost infinitely variety of ways of feeding, some fish even cultivate their own food. So they're very protective of it. There's one fish species that is so good at defending its particular

发表于:2018-12-26 / 阅读(52) / 评论(0) 分类 自然百科2014年

普通高中课程标准实验教科书 英语必修2 Unit 3 Computers-Using

I'm part of an android football team. About once a year we are allowed to get together to play a game of football. I'm as big as a human. In fact, I look like one too. On the football team I'm a striker so I have to be able to run very fast. My comp

发表于:2018-12-29 / 阅读(151) / 评论(0) 分类 高中一年级英语

VOA标准英语2013--Coffeehouse Nurtured America's Folk Musicians Over Half a Century

Coffeehouse Nurtured America's Folk Musicians Over Half a Century SARATOGA SPRINGS Saratoga Springs, in upstate New York, is far from America's musical hot spots of Nashville, Austin, Los Angeles and even New York City. But over the past five decades

发表于:2019-01-03 / 阅读(60) / 评论(0) 分类 VOA常速英语2013年(十二月)

斯图尔特·伯兰特:关于环保的四个"异端观点"

斯图尔特伯兰特曾引领了上世纪六七十年代的环保运动，现在，他开始重新考虑关于城市，核能，转基因改造和人工气候改造（地球工程）的问题。这是他在美国国务院的一个演讲，讲述的是

发表于:2019-01-05 / 阅读(38) / 评论(0) 分类 TED公开课:环境 重造计划

学个词Learn a Word 第1455课 nurture

今天我们要学的词是nurture。 Nurture, 是动词，意思是培养。美国首都华盛顿希望推动本地时尚产业的发展。 Washington DC launched a program to mentor local designers in hopes of nurturing and growing a local fashion

发表于:2019-02-07 / 阅读(60) / 评论(0) 分类 英语单词荟萃

英语听力文摘 English Digest 240、种植自己的假牙

Grow Your Own Dentures 种植牙也叫人工种植牙，并不是真的种上自然牙齿，种植牙而是通过医学方式，将与人体骨质兼容性高的纯钛金属经过精密的设计，制造成类似牙根的圆柱体或其他形状，以外

发表于:2019-03-09 / 阅读(197) / 评论(0) 分类 英语听力文摘 English Digest
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