群落光合作用

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Most plants capture sunlight. And the results are usually green. Because in photosynthesis, plant chlorophyll uses wavelengths of blue and our sun's ab

发表于:2018-12-24 / 阅读(111) / 评论(0) 分类 Scientific American(四)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. The Earths original atmosphere would have been unpleasantdeadly in factto any organisms that breathe oxygen. There wasnt any. Not until about 2.4 billi

发表于:2018-12-24 / 阅读(112) / 评论(0) 分类 Scientific American(四)月

In China, it is often used as a tonic 在中国,红糖通常被当作营养品 while the Teochew people use it as an ingredient for preserving food. 而潮汕人则偏爱用红糖来腌腊食物 After being roasted for 40 minutes in a wooden roaste

发表于:2018-12-28 / 阅读(105) / 评论(0) 分类 舌尖上的中国第一季

Xiapu, the oldest town in eastern Fujian, Xiapu City, Fujian has many natural harbors along its coastline. 霞浦,闽东最古老的县份-福建 霞浦市-漫长的海岸线为这里制造出众多的天然港湾。 The sea has become a natural la

发表于:2018-12-28 / 阅读(120) / 评论(0) 分类 舌尖上的中国第一季

(man) Today I want to discuss fossil fuels such as coat, oil, and natural gas. The term fossil fuel refers to the trapped remains of plants and animals in sedimentary rock. You see, living plants trap energy from the sun by the process of photosynth

发表于:2018-12-30 / 阅读(111) / 评论(0) 分类 托福听力短文

By Jerilyn Watson Broadcast: November 20, 2003 This is Steve Ember with the VOA Special English Education Report. Educational gardens called

发表于:2019-01-02 / 阅读(115) / 评论(0) 分类 VOA2003(下)-教育与新闻

In so doing, I reached a frontier of biology so strange, so rich, 通过这样的方式,我来到一个非常古怪却又非常丰富的生物学领域, that it seemed as though it exists on another planet. 简直就像降临到别的星球一样。

发表于:2019-01-03 / 阅读(134) / 评论(0) 分类 TED演讲科学篇

This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Solar panels typically convert sunlight into electricity or heat. But photosynthetic vegetation converts sunlight into chemical energy. Now M.I.T.s Dan

发表于:2019-01-04 / 阅读(163) / 评论(0) 分类 Scientific American(八)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. It may look like just another animal. But one kind of lowly sea slug actually has the solar power abilities of a plant. Bizarre but true, the sea slug

发表于:2019-01-08 / 阅读(145) / 评论(0) 分类 Scientific American(十二)月

One main goal in the renewable energy field is to find an efficient, inexpensive way to split water into hydrogen and oxygen. The hydrogen could then be used as a fuel source for vehicles or fuel cells. Typically, an electric current breaks the water

发表于:2019-01-08 / 阅读(164) / 评论(0) 分类 Scientific American(四)月

Amazing Amazon Hides Atlantic's Coral Reef 神奇的亚马逊隐藏着大西洋的珊瑚礁 Scientists studying the area where the Amazon River meets the Atlantic Ocean were in for a surprise. Under the muddy, dark Amazon River water was a large numb

发表于:2019-01-12 / 阅读(116) / 评论(0) 分类 2016年VOA慢速英语(五)月

ROBERT SIEGEL, HOST: Adam Frank usually has his head in the sky. He's an astrophysicist. It's an occupational hazard. Right now, though, he is dazzled by the universe of green right here on Earth. ADAM FRANK, BYLINE: Now that we're well past the star

发表于:2019-01-17 / 阅读(98) / 评论(0) 分类 2017年NPR美国国家公共电台6月

The first day of the experiment, we got out to our plot 实验的第一天,我们来到了实验地点, and a grizzly bear and her cub chased us off. 突然一头灰熊和她的熊宝宝出现,把我们赶跑了。 And I had no bear spray. But

发表于:2019-01-18 / 阅读(121) / 评论(0) 分类 TED演讲科学篇

很多来学雅思的同学见了老师都会说:文章太难了,那么多生词,是不是每个都要查中文释义并且背下来才能考好啊?如果你也有这样的困惑,不妨耐心地往下读,本文会给大家解答这方面的问

发表于:2019-01-18 / 阅读(154) / 评论(0) 分类 雅思英语

Science and technology 科学技术 Going underground 向地底进军 A project to reveal more about all the carbon on Earth 旨在向人们揭示更多地球碳信息的项目 The Deep Carbon Observatory 深碳观测站 A world still full of secrets

发表于:2019-01-26 / 阅读(114) / 评论(0) 分类 经济学人科技系列

BEIJING, Oct. 18 (Xinhuanet) -- Some seaweeds can kill the reef-building corals around them by emitting anti-coral chemicals, a new study found. The study was published Monday in the online edition of the journal Proceedings of the U.S. National Acad

发表于:2019-02-07 / 阅读(119) / 评论(0) 分类 英语新闻

The latest survey of the Great Barrier Reef off the coast of Australia reveals that an average of 35 percent of coral is now dead or dying in the northern and central sections. Experts from James Cook University say its the most extreme case of mass

发表于:2019-02-14 / 阅读(124) / 评论(0) 分类 中英双语新闻

Heather, when plants convert light into energy to help them grow it's called photosynthesis. 希瑟 植物把光转换成能量 来帮助它们生长 这叫做光合作用 But what is a photo of yourself taken by yourself called? 但把自己给自己拍

发表于:2019-02-15 / 阅读(105) / 评论(0) 分类 艾伦脱口秀

Once it seemed that the ocean floor was a desert of darkness. As everyone knew, sunlight was what made life possible by fueling photosynthesis, and sunlight can penetrate only the first few hundred yards of the oceans great depths. Lower, a few

发表于:2019-02-21 / 阅读(133) / 评论(0) 分类 托福英语

For many scientists, a species success is measured by sheer numbers. In that case, the most successful species known to man is a type of bacterium known as S-A-R-11, or SAR-11 for short. Scientists estimate that there are two-hundred and forty times

发表于:2019-03-06 / 阅读(260) / 评论(0) 分类 英语时差8,16
学英语单词
1-hydroxy-2-acetonaph-thone
a good samaritan
ardasse
asthmolysine
autocycles
avertive
aviamide-6
Bio-beads S
bottom-dump trailer
breakdown-torque speed
by ordinary mail
Cabiri
caramiphen hydrochloride
carpet-bags
casting shrinkage
ceftazidine
cirumferential
civil air defence
cloud height meter
communication map
concipiency
copying ribbon
correlation detection scheme
countdom
cut - throat competition
dacryocystectomy
dealkylates
Diever
diphenylamino-azo-m-benzene sulfonic acid
dull effect
dushed
ectocoel
electrostatic rice refiner
ellipsoidalis
embroidereth
ergostadiene
error condition (in calculators)
error measuring element
fine champagne
fluoro-scandium-complex
gain work experience
gateage
Gerdy
gudewives
herba lycopi
His Royal Highness
homeland-security
household saving
imamu amiri barakas
in-water
intellable
interstitial radiation
inviting over
ischiac
iskender
Kaikei
landlouper
leguminous plants
locule
logarithmic potential
long-throw
macaco
maneuvering room
masking solution
minority language
missouri primroses
Moreno, Pta.
mucostatic
ND (noise detector)
Palpigrada
phoront
photothermal displacement
piedmont scarp
plastic-laying machine
pucked
returned value specification
rhombic enantiomorphous hemihedral class
roller finder
rutherfordite
secretion physiology
shamrock pea
shelfback
sinusoidal undulation number
special high resolution
special proxy
Sphaeralcea
spiral wound plastic reinforced case
stercohilin
straight fluted tap
suborder Scorpaenoidea
substantialised
summarizer
superintendent of registrar
syimmetric(al)
transverse bent
triethyltin
Tzermiado
unloading valve
veto pressure unloading gear
Wallace, Mt.
washtech
Weierstrass's canonical product