[医] 硝化菌

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(129) / 评论(0) 分类 2006年慢速英语(一)月

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(173) / 评论(0) 分类 火星生命

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(131) / 评论(0) 分类 VOA标准英语2015年(一月)

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(111) / 评论(0) 分类 Scientific American(九)月

[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(148) / 评论(0) 分类 美国英语听力80篇

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(143) / 评论(0) 分类 科技之光

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(195) / 评论(0) 分类 VOA2003(下)-农业与经济

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(164) / 评论(0) 分类 Scientific American(五)月

[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(290) / 评论(0) 分类 高中英语人教版高一年级

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(121) / 评论(0) 分类 与美国小学生一起学英文第7册

SCIENCE IN THE NEWS - Condition of Oceans Affects Human Health From VOA Learning English, this is SCIENCE IN THE NEWS in Special English. Im Shirley Griffith. And Im Christopher Cruise. Today, we tell about a new way to measure the health of the worl

发表于:2019-01-12 / 阅读(142) / 评论(0) 分类 2012年VOA慢速英语(十一)月

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(124) / 评论(0) 分类 自然百科2009年

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(139) / 评论(0) 分类 2006年慢速英语(八)月

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(155) / 评论(0) 分类 文化聚焦

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(149) / 评论(0) 分类 科技之光

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(101) / 评论(0) 分类 英语新闻视频

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(129) / 评论(0) 分类 TED演讲教育篇

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(144) / 评论(0) 分类 TED演讲教育篇

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(230) / 评论(0) 分类 万物简史

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(165) / 评论(0) 分类 万物简史
学英语单词
aceto-carmine
Angiococcus
araza
Bjarnum
blocking position
bodgies
chatoyances
chelidoxanthine
combustion fule gas apparatus
communication application
community-led
consumer-banking
container derrick
content coupling
coregonidaes
cross-week
Crouania
data cube
dentino-enamel junction
differential-input voltage range
double-horn loudspeaker
drilling time log
drupeus hygropetricus
dummy coupler
extensible belt conveyer
Extremaduran
Facies posterior palpebralis
fennels
firebase
first-level effect
flush curb
freidheim
gambo hemp
give eloquent proof of...
go to the great expense of
going with you
group delay frequency characteristic
Haeckelian
heart myofibril
Hispanicism
Iarauarune, Sa.
imbricative marketing
immersing cooling
immunity substance
immunoglobular
incontinent
infective fistula of semicircular canal
information technology information sharing and analysis center
instinto
IP Multicast Technology
ischiopodites
just social order
kaftans
kuharic
large hewn squares
lie down on the job
line stocks
low-altitude bombing
m.o
Meelastin
melnychenko
Merlucciinae
method of knowledge representation
minnesotans
monochrome pictur
mothproofing preparation
naphthoresorcin
Newbiggin Bay
non-experimental
nonequilibrium cooling
not by a long way
ontheshelf
outstanding recommendation against class
paramenic
pepe nipple
perinium
pig dog
protective sea wall
purebloods
remeasured
resiliently
rodrik
rose curve
sailing-races
shimadas
shut your eyes
Spc1p
spurget
stone curse
Subject Matter of Arbitration
suspend production
thallodea
Thiodinon
throwing cold water on
training center
tuberculin unit
vaporisations
violet blue
with clockwork precision
yolk lecithin(e)
zero power factor method
ziegel