时间:2019-01-17 作者:英语课 分类:2018年NPR美国国家公共电台7月


英语课

 


MARY LOUISE KELLY, HOST:


Summertime brings algae 1 blooms to many parts of the country - those mats of bright green organisms that can blanket waterways. In places like Florida's Lake Okeechobee, the blooms hurt tourism. They kill fish. They threaten water supplies. But a solution may be on the horizon. From Miami, NPR's Greg Allen reports.


GREG ALLEN, BYLINE 2: Shells from freshwater mussels line the shores of Lake Okeechobee. This is one of the largest lakes in the U.S., in the center of the Florida peninsula. But it has a nagging 3 problem. Nearly every year now, large algae blooms blanket the lake.


STEVE DAVIS: Oh, my gosh. Look how thick this blue-green mat is right here.


ALLEN: Steve Davis is a senior ecologist with the Everglades Foundation. Lake Okeechobee is the source of much of the water that flows south through the Everglades. At this lock connecting the lake with the St. Lucie River, everything is coated in green.


DAVIS: It's a pretty dense 4 mat of - I would bet - Microcystis blue-green algae. Looks like a paint truck, you know, crashed and spilled green paint all over the surface.


ALLEN: The algae have a strong smell that can irritate eyes and throats. Even worse, it can be toxic 5. Two years ago, algae flowing down the St. Lucie River forced the closure of beaches during the packed July Fourth holiday. From China to Kenya to Canada, phosphorus-rich runoff from farms, cities and suburbs have made algal blooms a perennial 6 problem. The Everglades Foundation in South Florida decided 7 to tackle it head-on.


MELODIE NAJA: We thought that this phosphorus is such a big challenge - the phosphorus problem - that it would deserve a $10 million prize.


ALLEN: It's called the Barley 8 Water Prize, named for one of the Everglades Foundation's founders 9. Chief scientist Melodie Naja says the goal was to develop an efficient, cost-effective technology to remove phosphorus from freshwater bodies.


NAJA: We want this technology to be affordable 10, to be cheap, that all states, all developing and developed countries, could use it to clean their pollution.


ALLEN: Currently, removing phosphorus from polluted water takes time and a lot of real estate. In South Florida, large, shallow reservoirs covering nearly 60,000 acres are used to treat just a small portion of the water that flows out of Lake Okeechobee. The companies, universities and research groups taking part in the competition are testing technologies to remove the phosphorous from the entire lake, nearly a trillion gallons of water.


KOOS BAAS: Do you know - if you want to do Lake Okeechobee, like you just suggested, you can do it.


ALLEN: Koos Baas is a chemical engineer with Green Water Solution, a company based in South Florida and one of nine teams competing for the $10 million Barley Prize. His and the other teams recently wrapped up the third round of the competition in Canada. They're being tested on their ability to scrub phosphorus from freshwater. Baas' company's technology is already being used in Europe to remove phosphorus from water used in cooling systems. He's confident it can be scaled up for use in large water treatment plants where rivers and streams flow into the lake.


BAAS: You can actually put an installation on a dike 11. So before it enters Lake Okeechobee, you can grab it there and treat it there.


ALLEN: Loren Parra with the Everglades Foundation says the goal of the competition is to develop technologies that could be marketed around the world as a cheap solution to a growing problem. She says some of the teams are close.


LOREN PARRA: We've already seen really great progress in the nine teams that we have. So we're really excited, looking forward to Grand Challenge, and we're certainly hoping that one of these guys can change the world.


ALLEN: The winners of the current round will be announced in October. The final phase, the Grand Challenge with its $10 million prize, gets underway in 2020. Greg Allen, NPR News, Miami.



n.水藻,海藻
  • Most algae live in water.多数藻类生长在水中。
  • Algae grow and spread quickly in the lake.湖中水藻滋蔓。
n.署名;v.署名
  • His byline was absent as well.他的署名也不见了。
  • We wish to thank the author of this article which carries no byline.我们要感谢这篇文章的那位没有署名的作者。
adj.唠叨的,挑剔的;使人不得安宁的v.不断地挑剔或批评(某人)( nag的现在分词 );不断地烦扰或伤害(某人);无休止地抱怨;不断指责
  • Stop nagging—I'll do it as soon as I can. 别唠叨了—我会尽快做的。
  • I've got a nagging pain in my lower back. 我后背下方老是疼。 来自《简明英汉词典》
a.密集的,稠密的,浓密的;密度大的
  • The general ambushed his troops in the dense woods. 将军把部队埋伏在浓密的树林里。
  • The path was completely covered by the dense foliage. 小路被树叶厚厚地盖了一层。
adj.有毒的,因中毒引起的
  • The factory had accidentally released a quantity of toxic waste into the sea.这家工厂意外泄漏大量有毒废物到海中。
  • There is a risk that toxic chemicals might be blasted into the atmosphere.爆炸后有毒化学物质可能会进入大气层。
adj.终年的;长久的
  • I wonder at her perennial youthfulness.我对她青春常驻感到惊讶。
  • There's a perennial shortage of teachers with science qualifications.有理科教学资格的老师一直都很短缺。
adj.决定了的,坚决的;明显的,明确的
  • This gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
  • There is a decided difference between British and Chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。
n.大麦,大麦粒
  • They looked out across the fields of waving barley.他们朝田里望去,只见大麦随风摇摆。
  • He cropped several acres with barley.他种了几英亩大麦。
n.创始人( founder的名词复数 )
  • He was one of the founders of the university's medical faculty. 他是该大学医学院的创建人之一。 来自辞典例句
  • The founders of our religion made this a cornerstone of morality. 我们宗教的创始人把这看作是道德的基石。 来自辞典例句
adj.支付得起的,不太昂贵的
  • The rent for the four-roomed house is affordable.四居室房屋的房租付得起。
  • There are few affordable apartments in big cities.在大城市中没有几所公寓是便宜的。
n.堤,沟;v.开沟排水
  • They dug a dike along walls of the school.他们沿校墙挖沟。
  • Fortunately,the flood did not break the dike.还好,这场大水没有把堤坝冲坏。
学英语单词
a strake
activated sludge filamentation bulking
adder accumulator
al faw (fao)
alkaline incrusted cystitis
apple jellies
B. & T.
bar disintegrator
baseball-card
be in favour
be no end fine
big-endian and little-endian
bolivian monetary units
boyis
camshaft gear drive
cap flashing
Cardium
cavetti
chinese calligraphy
claimants ledger
conversational report
crab winch
cutting over
delay mixing
deletes
demeurer
dhoruba
diatomaceous chert
double counterpoint in the twelfth
Dove Dale
energy-intensive technology
esc.
Ethershare
evaporable waste
Evenk
expendient
false reed
flour
forward current rating
genuflect
guardaba
hand driven generator
hattrick
heat exchange in sea
ice cream slab
indicine
individual cylinder
inhabited building distance
inherent opening time
ioderma
ko gaku (japan)
Kǒmdǒksan
mace butter
Madison River
mat matter
matrix gate
micro-code
monosyaptic reflex
multiple terminal
N-dimethylcyclohexaneethylamine
Nafrine
nuclear magnetic resonance computerized tomography
ordinal indicator
ordinary budget
Paleo-Siberian languages
Paneth and Hevesy method
passing shot
physik
pilot light burner
polyphenol-aldehyde fibre reinforcement
precompute
preferee
pry bars
Puricama
raphe of scrotum
rejoindure
roller cone
run-up brake
Salix microphyta
salmorejo
salvage group
scammoniae resina
scummers
semibatch selectivity
Serangoon, Pulau
Sitosterln
slamkins
sphinx-likest
sulfhydryl compound
super typhoon
taxable base
transfrontal orbitotomy
trial at nisi prius
triphenylguanidine
ultraviolet absorber fixative
unique array
unsupportively
vertical sliding window
vessel detection
virusin
yellow-orange leaf