水田土壤化学

Passage 21 Soils There are many different kinds of soils. Different soils have different types of rock and minerals in them than other. Some soils have more water in them than others. Some soils might have more plant and animal material in them, too

发表于:2018-11-30 / 阅读(259) / 评论(0) 分类 英语专业四级听写

AGRICULTURE REPORT – January 15, 2002: Growing Wheat By George Grow This is the VOA Special English AGRICULTURE REPORT. Studies show that there will be nine-thousand-million people in the world by t

发表于:2018-12-07 / 阅读(137) / 评论(0) 分类 农业与发展

[00:21.89]lesson 1 [00:36.05]Have/has got =have/has [00:59.22]I have got a CD player, [01:03.97]but Jim hasn't got one. [01:10.92]Has Lucy got one? [01:22.99]I have a CD player, [01:31.66]but Jim hasn't/doesn't have one. [01:50.60]Does Lucy have a Cd

发表于:2018-12-10 / 阅读(168) / 评论(0) 分类 初中英语人教版初三

发表于:2018-12-25 / 阅读(141) / 评论(0) 分类 洋话连篇

Members of a Beijing diving club had the chance to experience China's Great Wall in a way few others have by exploring a section of the landmark that was submerged in the cloudy waters of a reservoir. There is no doubting that the Great Wall of Chin

发表于:2018-12-30 / 阅读(122) / 评论(0) 分类 国家地理2008年

The first cable was put down during the years 1857-1858; but after transmitting about 400 telegrams, it went dead. 第一条电缆是在1857年和1858年铺设的。但传送了大约400次电报后,它就失灵了。 In 1863 engineers built a new

发表于:2018-12-31 / 阅读(126) / 评论(0) 分类 《海底两万里》中英双语有声读物

[00:02.47]浮华背后 Behind Fortunes [00:05.75]Though fortunes achieved through hard work and other qualities can make people live cozily, [00:12.09]they should never be considered as the aim of living. [00:16.16]Therefore, in the process of seeking fo

发表于:2019-01-02 / 阅读(243) / 评论(0) 分类 智慧背囊超越自我

As It Is - Remember Your Chemistry Classes? An international team of researchers recently reported creation of a new element that is 40 percent heavier than lead. The researchers successfully developed what they are calling Element Number 117 at a la

发表于:2019-01-03 / 阅读(159) / 评论(0) 分类 2014年VOA慢速英语(八)月

Having the opportunity to take on a diverse range of classes such as economics and chemistry along with her music studies is the perfect combination for Diane. Marsha James | Washington DC 10 August 2010 Oberlin Conservatory of Music Student Diane Ly

发表于:2019-01-13 / 阅读(144) / 评论(0) 分类 VOA标准英语2010年(八)月

Pioneering Soil Researcher Wins Top Environment Prize Biologist Diana Wall went to the ends of the earth - the seemingly lifeless Antarctic desert - to study the life in soil. What soil life does for us, it provides us with many benefits that we don'

发表于:2019-01-14 / 阅读(117) / 评论(0) 分类 VOA标准英语2013年(四月)

There have been centuries of tension along the Nile between Arabs and Nubians, 25 people were recently killed near here, and many more were injured during clashes between Arab and Nubian families, many Nubians still feel ostracized from Egyptian life

发表于:2019-01-16 / 阅读(114) / 评论(0) 分类 自然百科2015年

This years Nobel Prize in Chemistry is about the worlds smallest machines. G?ran Hansson, secretary general of the Royal Swedish Academy of Sciences, earlier this morning. The Royal Swedish Academy of Sciences has decided to award the 2016 Nobel Priz

发表于:2019-01-17 / 阅读(172) / 评论(0) 分类 2016年Scientific American(十)月

Members of a Beijing diving club had the chance to experience China's Great Wall in a way few others have by exploring a section of the landmark that was submerged in the cloudy waters of a reservoir. There is no doubting that the Great Wall of China

发表于:2019-01-22 / 阅读(94) / 评论(0) 分类 自然百科2008年

They may be a little safer here. But the food in the forest is far less nutritious than on the riverbanks. If they want to eat well and avoid wolves this winter, they'll need to keep on moving. As the elk move gradually downwards, they follow the riv

发表于:2019-01-22 / 阅读(120) / 评论(0) 分类 自然百科2012年

By Tom Rivers London 07 October 2009 Ada Yonath (file photo) Two Americans and one Israeli share this year's Nobel Prize in Chemistry for their work showing how the DNA code is translated into life itself. Americans Venkatraman Ramakrishnan and Thom

发表于:2019-02-03 / 阅读(135) / 评论(0) 分类 VOA标准英语2009年(十月)

By Kevin Billinghurst Stockholm 10 October 2007 The 2007 Nobel Prize for Chemistry has been awarded to Gerhard Ertl of the Max Planck Society in Berlin. Kevin Billinghurst has the story from Stockholm. The Royal Swedish Academy of Sciences honors Pr

发表于:2019-02-04 / 阅读(150) / 评论(0) 分类 2007年VOA常速英语(十月)

BEIJING, March 18 (Xinhuanet) --In February this year, Chinese National Geographic magazine published a series of exquisite pictures about Shicheng City (literally, Lion City), and since then, the public's strong interest in the city has been aroused

发表于:2019-02-04 / 阅读(167) / 评论(0) 分类 英语新闻

A Japanese and a pair of American scientists captured this year's Nobel chemistry prize for discovering a glowing green protein in jellyfish that can be used to spot the beginning of diseases like cancer. Lisa Bryant has more on the prestigious awar

发表于:2019-02-06 / 阅读(125) / 评论(0) 分类 VOA标准英语2008年(十月)

Now let's get some of the science behind the cold. What is driving these temperatures and how long is it expected to last. We bring in meteorologist Alex Wilson of US' Weather Channel. As even talking about this unusual cold, something you've been he

发表于:2019-02-18 / 阅读(177) / 评论(0) 分类 CCTV9英语新闻2014年01月

We are rediscovering the enigmas(谜团) of the Moon and they're really in our own backyard Dr Jim Garvin, Nasa Goddard Space Flight Center Moon water has world in a twitter A surprising amount of water has been found to exist in the Moon's soil. Data

发表于:2019-02-18 / 阅读(118) / 评论(0) 分类 英语新闻
学英语单词
advance buying for the season's needs
aldolate
alpine frost soil
analog stereoplotter
babyfood
bahari
blese
Bloom syndrome
blowin' mud
byte synchronization
calomelene
canalize
cardiac axis
castle-builder
Cinnamomum kotoense
coffee and cake
communications preprocessor
cone-in cone coal
dermatobasidia
development sampling
dhers
dilucidate
dipsacus fullonums
duviviers
e-team
electromagnetic solenoid switch
endomembrane system
endorse over a bill to another person
enginemen
excrementize
explosive factor
fasciectomy
fernoxes
fluoro-manganese-complex
friction drum
fuel oil certificate
glummest
Gottlieb Daimler
grain conductor
hazard of plant
hi-
highway construction cost
hormephobia
hourly basis
housesat
infinitely thick layer
Is there anything the matter with someone ?
isobutyl ether
knight-ridders
laminae basalis
Lane's disease
letter for auditor
Lloyd's Form Average Bond
lophotricheal bacteria
make concerted efforts
Marlowe, Christopher
mesh with
monetary standard
natron alaun (mendozite)
newly-designed
night flying chart
not straight
oil-drenched
OPS 5
parallergia
pericardial gland
petinine
play a losing game
population forecast
poundage
prelately
pressurized lubrication system
pseudomorphy
PTERIOIDA
put one's house in order
Quan Hoa
Rat and Mice
Rayleigh cycle
response metameter
river development
rotative mechanism for arm
Rouzhi
school-leds
segregation foliation
sky-rocket
spring lay
standadized ratio
standard relative luminosity
storebrands
summer-job
Tsana
tufting machine
tyrite (fergusonite)
unifiedly
vocabularize
vogue
Wanfried
warmnesses
windoid
winged dragon
wonder beans
xinesis