生物移栖

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(122) / 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(164) / 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(128) / 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(107) / 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(143) / 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(139) / 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(188) / 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(156) / 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(282) / 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(116) / 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(131) / 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(117) / 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(136) / 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(145) / 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(145) / 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(100) / 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(125) / 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(139) / 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(221) / 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(161) / 评论(0) 分类 万物简史
学英语单词
Anemone griffithii
anterior labial veinss
anti aliasing
antiquers
antisatellite weapon
archnosphaera myriacantha
astrocele
atmosphere equipment
bead building machine
Bethune
big hole rock drill
body center plate
boulder ferns
brain-fags
capital transaction
carriage track
centre of gravity range
Chinese elm
close to traffic
colliding vessel
colligend ion
contendents
control distribution center
counterflow engine
cultural organization
Dalles, The
depreciation on franchises
diarsenite
dollar bills
el-said
Elephant Man
elevable
epimera
ex-far
externalizing disorder
eye rhymes
fantasy sports
fatigue threshold
first flushes
genus Schefflera
gigantin
gland end cover
global war
gold assets
graw
humidity gauge
hyaloriaceae
hydraulic pump aggregate
I/C
impinging
impurity state conduction
ion selection electrode
isaly
labile reduction manganese
laser auto- leveling device
lip-sync
locomotor activity rhythm
mail contract
Maroboduus
mast shroud
mobile drill
morcele
MOSRAM MOS (random access memory)
Mühldorf
negative mobility
nephritics
nicotianin
nubuk
ocean mining ship
olympic brow
ophisauruss
oscillogram trace reader
parenchymatous jaundice
philosamia cynthia
phosphate absorption coefficient
pinzn
play readings
pneumatic control system
Politef
polymer-solvents
positive dislocation
proselytutes
real assets
right-holders
sign for point operation
siscses-s
slip racking
sloor
snow route
sofronitski
solenoid valve(pneumatic)
state action
steely-eyed
stressrelated
stretching machine
Swertia cincta
teebend
third stomaches
thyristor converter set
two-part fugue
unprotectively
zigsaw