时间:2018-12-01 作者:英语课 分类:VOA2003(下)-环境与健康


英语课

by Caty Weaver 1
Broadcast: July 4, 2003
This is Steve Ember with the VOA Special English Environment Report.
Scientists in the United States say plant life has increased on Earth in the past twenty years. And they say in every area of plant growth the increase is the result of weather conditions.
Eight scientists from across the United States did the study. The space agency 2 1)NASA and the Department of 2)Energy paid for it. The magazine Science published the findings 3.
The researchers spent a year-and-a-half examining weather and satellite information. The information was recorded from nineteen-eighty-two to nineteen-ninety-nine. This period was one of the warmest on record. Researchers found that rainfall generally increased during this time.
The satellites measured the amount of leaves on plants and the amount of sunlight taken in. The scientists used that information to estimate 4 what is called net primary production. This is the total amount of carbon stored in land plants.
The scientists report a six percent increase in stored carbon since nineteen-eighty-two. They say gains were high in 3)equatorial areas, especially around the Amazon River in South America. The report says that area alone had a one percent increase in net primary production.
Ramakrishna Nemani of the University of Montana in Missoula led the study. He says reduced cloud cover led to the growth in the Amazon area. He says the lack of clouds permitted more sunlight to get through. More sunlight meant increases in 4)photosynthesis 5. That is the process by which plants use energy from sunlight to produce the chemicals they need to grow.
Northern Canada, the north-central United States and northern Europe were second in increased plant growth. Ramakrishna Nemani says a rise in temperatures helped plants there.
All together, the report says twenty-five percent of areas of plant life on Earth experienced 6 increases. But, the scientists also note increases in the number of people on Earth and carbon 5)dioxide levels in the atmosphere. Study scientist Ranga Myneni of Boston University in Massachusetts says humans use about half the net primary production on Earth. And, he notes that world population grew by thirty-six percent during the period of time studied.
This VOA Special English Environment Report was written by Caty Weaver. This is Steve Ember.
注释:
1) NASA [5nAsE] abbr.National Aeronautics 7 and Space Administration 8 (美国)国家航空和宇宙航行局
2) energy [5enEdVi] n.精力,精神,活力,(物)能量
3) equatorial [7ekwE5tC:riEl] adj.近赤道的,赤道的
4) photosynthesis [7fEutEu5sinWEsis] n.光合作用
5) dioxide [dai5Cksaid] n.二氧化物

1 weaver
n.织布工;编织者
  • She was a fast weaver and the cloth was very good.她织布织得很快,而且布的质量很好。
  • The eager weaver did not notice my confusion.热心的纺织工人没有注意到我的狼狈相。
2 agency
n.经办;代理;代理处
  • This disease is spread through the agency of insects.这种疾病是通过昆虫媒介传播的。
  • He spoke in the person of Xinhua News Agency.他代表新华社讲话。
3 findings
n.发现物( finding的名词复数 );调查(或研究)的结果;(陪审团的)裁决
  • It behoves us to study these findings carefully. 我们理应认真研究这些发现。
  • Their findings have been widely disseminated . 他们的研究成果已经广为传播。
4 estimate
n.估计,估量;评价,看法;vt.估计,估量
  • We estimate the cost to be five thousand dollars.我们估计费用为5000美元。
  • The lowest estimate would put the worth of the jewel at $200.按最低的评估这块宝石也值200美元。
5 photosynthesis
n.光合作用
  • In apple trees photosynthesis occurs almost exclusively in the leaves.苹果树的光合作用几乎只发生在叶内。
  • Chloroplasts are the structures in which photosynthesis happens.叶绿体就是光合作用发生的地方。
6 experienced
adj.有经验的;经验丰富的,熟练的
  • Experienced seamen will advise you about sailing in this weather.有经验的海员会告诉你在这种天气下的航行情况。
  • Perhaps you and I had better change over;you are more experienced.也许我们的工作还是对换一下好,你比我更有经验。
7 aeronautics
n.航空术,航空学
  • National Aeronautics and Space undertakings have made great progress.国家的航空航天事业有了很大的发展。
  • He devoted every spare moment to aeronautics.他把他所有多余的时间用在航空学上。
8 administration
n.经营,管理;行政,行政机关,管理部门
  • Who is in charge of the administration of your company?你们公司的行政工作由谁负责?
  • The teachers are responsible to the school administration.教师向学校行政负责。
学英语单词
.ttf files
abreauvoir
affix a seal
arborine
autopilot engage and trim indicator
bad copy
battery terminal
block macromolecule
body hoop
bottom gradient electrode system
bulb nose
c-legs
calcaneocuboid articulation
carrier solvent
chinny reckon
Co-ferol
Cohengua, R.
control register instruction
core maximum heat flux (density)
Cortadren
cotton trousers
coupled valve
cursarary
differential earnings from land
diluent modifier
double out
drop-in commercial
ecological climatology
El Orégano
expense not allocated
fermented tea
fertility of soil
frustillatim
fuel refuse-derived
graviditas tuboabdominalis
heading (hdg)
heating systems
hierarchy model
His bark is worse than his bite.
hoglike
hold-over
I/O mode
Ilheus encephalitis
indian chocolates
invoicings
Johnson, Jack
Karvezide
keep one's eye on
khairulins
kick starter spring
krasorskii's method
Kronig's method
lane cake
leptospira tarassovi
lifeline pistol
literary youth
lulita
mean deviations
mediamax
microwave power module
nested sink
noninterchangeable
NSOC
Nupasal
oleostrut
on line service provider
order of reactor
patio doors
perecs
polyphase converter
pound the pavement
proceeding with
program clarity
proper energy
rate of strain tensor
reducing acid radical
regional unconformity
remote operated
rheostatic type automatic power factor regulator
Rosenmmuller's gland
Rzhevsky
sanitary napkin
sea damage for seller's account
self-balancing type
sepr.
servo
set a clock
simple proposition
slicklines
snip-snap
social density
sphero-cylindrical lenticular
St Anthony
staphyloma
telecommunication networks
territorial division of labor
Themistian
turn volume
water trumpet
Wedge Mountain
zizanin
Zyryanskoye