微需氧菌

VOA慢速英语20060124a

AGRICULTURE REPORT - Don't Know Much About Mulch?By George Grow Broadcast: Tuesday, January 24, 2006 I'm Faith Lapidus with the VOA Special English Agriculture Report. Mulch is important to farmers. M

发表于:2018-12-07 / 阅读(115) / 评论(0)

2006年慢速英语（一）月

Horizon - Life On Mars 火星生命 - 4

These discoveries raised the stakes. Here was a planet similar to our own. Mars might not have cities or civilizations. But it could be home to other smaller life forms like microbes. Chris McKay is N

发表于:2018-12-07 / 阅读(160) / 评论(0)

火星生命

VOA标准英语2015--Rock-Consuming Organisms Alter Views of Life Processes

Rock-Consuming Organisms Alter Views of Life Processes LOS ANGELES Kenneth Nealson can be described in many ways, including expert in microbiology and biochemistry. But that's not the one he is most proud of. People call me the 'father of Shewanella,

发表于:2018-12-08 / 阅读(123) / 评论(0)

VOA标准英语2015年(一月)

SSS 2010-09-21

This is Scientific Americans 60-Second Science, Im Steve Mirsky. Got a minute? Theres a cool new Web siteand iPhone appthat could come in handy in a wide variety of circumstances. Its called Time Tree. And it tells you how closely related any two org

发表于:2018-12-24 / 阅读(104) / 评论(0)

Scientific American(九)月

美国英语听力80篇2 Lesson29

[00:04.36]American officials are seeking ways for cities to grow without expanding into surrounding open space. [00:14.00]They are trying to rebuild the centers of older industrial cities. [00:19.91]And they want to help people use less resources suc

发表于:2018-12-26 / 阅读(140) / 评论(0)

美国英语听力80篇

注意街头食品的卫生

92 注意街头食品的卫生 DEVELOPMENT REPORT September 10, 2001: Street Food SafetyBy George Grow （Start at 1'01

发表于:2019-01-02 / 阅读(136) / 评论(0)

科技之光

Biosolids

By Mario Ritter Broadcast: October 28, 2003 This is Steve Ember with the VOA Special English Agriculture Report. Farmers have long put animal waste on their fields. They may also use human waste. Mode

发表于:2019-01-02 / 阅读(182) / 评论(0)

VOA2003（下）-农业与经济

SSS 2008-05-05

This is Scientific American's 60-Second Science, Im Steve Mirsky. Got a minute? Biologists often attempt to construct a genealogy that shows the relationships of all life on earth. One well-accepted effort compares the nucleic acid sequences that cod

发表于:2019-01-08 / 阅读(152) / 评论(0)

Scientific American(五)月

高中英语人教版高一年级上18

[00:11.60]WARMING UP [00:16.04]How many new uses can you think of for the folowing items? [00:36.49]reminds us of the appearance of nanotechnology, [00:53.76]according to which nothing is useless and [01:04.91]no garbage or waste material to speak of

发表于:2019-01-10 / 阅读(278) / 评论(0)

高中英语人教版高一年级

与美国小学生一起学英文第7册第8期:细胞

Cell 细胞 Every living thing has at least one cell. 每个生物至少有一个细胞。 Then, what is a cell? 那么，什么是细胞呢？ Every cell works differently, but most cells work to maintain life. 每个细胞的功能都不相同，但大

发表于:2019-01-10 / 阅读(116) / 评论(0)

与美国小学生一起学英文第7册

英语听力：自然百科为生而死的生物

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,

发表于:2019-01-22 / 阅读(104) / 评论(0)

自然百科2009年

VOA慢速英语20060821a

DEVELOPMENT REPORT - Cooking Meals With the Sun for FuelBy Jill Moss Broadcast: Monday, August 21, 2006 I'm Gwen Outen with the VOA Special English Development Report. Millions of people around the wo

发表于:2019-01-30 / 阅读(135) / 评论(0)

2006年慢速英语（八）月

嗅觉灵敏的小猎犬

61 嗅觉灵敏的小猎犬 DATE=7-3-01 TITLE=AGRICULTURE REPORT - Beagle Brigade BYLINE=George Grow (Start at 1'00

发表于:2019-01-30 / 阅读(144) / 评论(0)

文化聚焦

Food Poisoning in Summer

56 自然原因导致夏季食物中毒比率偏高 DATE=6-12-01 TITLE=AGRICULTURE REPORT - Food Poisoning in Summer BYLINE=George Grow (Start at 59

发表于:2019-01-30 / 阅读(138) / 评论(0)

科技之光

英语新闻视频：你每天吃的健康吗？

Studies show artificial sweetenersmay actually cause weight gain because they stimulatecarbohydratecravings. Excessive sweetener intake may also lead to heart attacks and strokes。 Too much can lead to increased risk of heart attacks,irritability, e

发表于:2019-02-05 / 阅读(95) / 评论(0)

英语新闻视频

TED演讲：宏观历史(7)

For most of that time of life on Earth, living organisms have been relatively simple -- single cells. 地球的大多数时间，生物体多是以简单的单细胞存在的。 But they had great diversity, and, inside, great complexity. 但是它们是

发表于:2019-02-14 / 阅读(119) / 评论(0)

TED演讲教育篇

TED演讲：宏观历史(6)

But of course, life is more than just exotic chemistry. 但是当然，生命不仅仅是奇异的化学物质。 How do you stabilize those huge molecules that seem to be viable? 那是怎么稳定那些大量的、似乎有存活的分子的呢？

发表于:2019-02-14 / 阅读(131) / 评论(0)

TED演讲教育篇

万物简史第440期:小生物的世界(11)

In 1969, in an attempt to bring some order to the growing inadequacies of classification, 1969年，为了整理一下越来越显得不足的分类法， an ecologist from Cornell University named R. H. Whittaker unveiled in the journal Science a pr

发表于:2019-02-17 / 阅读(218) / 评论(0)

万物简史

英语听力—环球英语 1164 The Five Keys to Safer Food

Voice 1 Welcome to Spotlight. Im Liz Waid. Voice 2 And Im Joshua Leo. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 It has been a long day. You have wor

发表于:2019-02-21 / 阅读(128) / 评论(0)

环球英语 Spotlight

万物简史第262期:大地在移动(16)

Earth is alone among the rocky planets in having tectonics, and why this should be is a bit of a mystery. It is not simply a matter of size or densityVenus is nearly a twin of Earth in these respects and yet has no tectonic activity. It is thoughttho

发表于:2019-02-25 / 阅读(155) / 评论(0)

万物简史

最新学习文章

热门学习文章

热门标签

英语听力 VOA标准英语 VOA 英语歌曲口语听力提高听力材料听力教程英语学习 NPR 英语口语 VOA慢速英语美国国家电台儿童英语 VOA英语小学英语 cnn VOA常速英语标准英语英文歌曲听电影学英语英语单词英文电影慢速英语 CRI 美联社新闻美国有线新闻加州分级澳洲新闻流行歌曲常速英语 ABC新闻快递疯狂英语英语读物听力棚车少年经济学人英语词汇商务英语 VOA双语新闻 BBC 中国电台大学英语 Treasures 加州语文 BBC英语英语听力网站 VOA英语教学词汇万花筒 SSS VOA英语听力 AP 新概念分级英语英语广播听力精选英语播客英文绘本 TED演讲赖世雄英语MP3 CCTV9英语新闻 lesson 英语新闻初中英语学英语英语语法历史上的今天英文广播剧英语游戏原版英语小说英语有声读物书虫英语牛津英语读物访谈录新闻一分钟考研英语英语每日在线听新闻 Us 新概念英语地道英语单词第二册自然百科高中英语 sports 实用英语 MP3听力辛沛沛 ESL英语第一册英语每日一句 unit 新东方 GRE 每日一词 BBC听力

学英语单词

all integer constraints