时间:2018-12-07 作者:英语课 分类:VOA2003(上)-健康资讯


英语课

 



Broadcast: January 27, 2003
By Jill Moss 1


This is the VOA Special English Development Report.


Researchers have discovered a simple answer to a huge problem in developing countries. They have found that cholera 2 and other deadly organisms can be removed from drinking water with simple cloth filters2. Pouring water from rivers or lakes through several thicknesses of cloth can trap tiny organisms that contain the cholera bacteria.


Researchers discovered this fact during a three-year study in Bangladesh3. American and Bangladeshi scientists went to sixty-five small villages in a country where cholera is a major health problem. They tested the use of saris as cloth filters. A sari is the traditional clothing worn by most women in Bangladesh.


People in one group of villages used cloth from old saris, folded eight times, as a filter for their drinking water. People in another group of villages used modern nylon4 filters for their water. People in the other villages continued to gather water in traditional ways, without using filters. About forty-four-thousand people were studied in each of the three groups of villages.


Rita Colwell from the University of Maryland at College Park helped lead the study. She said the people in the villages using filters from old saris had the lowest number of cases of cholera. The researchers also found that almost ninety-nine percent of cholera bacteria could be filtered out with the sari cloth. Mizz Colwell said that cloth from old saris worked best because it has been washed repeatedly. She said the space between the threads of the material narrows when the cloth is washed so it traps smaller particles.


Cholera is an intestinal 3 infection caused by bacteria5. It can develop in the body in less than five days. It can quickly lead to severe diarrhea6, vomiting7, and a loss of bodily fluids. Death is possible if treatment is not given quickly. Children under age five are most at risk. In two-thousand-one, the World Health Organization reported almost two-hundred-thousand cases of cholera in fifty-eight countries. About three-thousand people died from the disease.


Cholera spreads quickly in developing countries. People get the disease by drinking water or eating food that contains the bacteria. The disease is most often found in areas where there is unclean water and ineffective human waste removal systems.


1. cholera [5kClErE ] n. 霍乱
2. filters [5fIltE] n. 过滤器
3. Bangladesh [7bB:N^lE5deF] 孟加拉国
4. nylon [5naIlEn] n. 尼龙
5. bacteria [bAk5tIErIE] n. 细菌
6. diarrhea [7daIE5rIE] n. 痢疾,腹泻
7. vomit [5vRmIt] vt.呕吐



1 moss
n.苔,藓,地衣
  • Moss grows on a rock.苔藓生在石头上。
  • He was found asleep on a pillow of leaves and moss.有人看见他枕着树叶和苔藓睡着了。
2 cholera
n.霍乱
  • The cholera outbreak has been contained.霍乱的发生已被控制住了。
  • Cholera spread like wildfire through the camps.霍乱在营地里迅速传播。
3 intestinal
adj.肠的;肠壁;肠道细菌
  • A few other conditions are in high intestinal obstruction. 其它少数情况是高位肠梗阻。 来自辞典例句
  • This complication has occasionally occurred following the use of intestinal antiseptics. 这种并发症偶而发生在使用肠道抗菌剂上。 来自辞典例句
学英语单词
absolute pressure vacuum gauge
advisory committee of the units
Alaskanizes
aphrodite (afrodite)
appropriation budget
assets value
be sour on
Bernoulli probability
boss-man
Bract.
brother in law
Budhardalur
by-gum
canned slice(d) fruit
capsicum plaster
choke cherry
clamping ring stop
cloth-cap
collect data
commonwealth banks
creevey
demichele
differential controller
Diplarche multiflora
dithiothreitol
down-current
dual conversion
elastomeric connector
Elatostema goniocephalum
electrostatic voltmeter
Endoprocta
fibromatous chondroma
fishery production
fissidens cristata mutt
fumaryl
further normalization
future purchases and sales
graphium doson postianus
hand brake telltale
Hernandarias
Houthalen
hydrocarbon type analysis
ideal burning
knifegrinder
kurre
laminated-spring
Lasegue's disease
lazary
lipoid hyperplasia
Lubinol
Lónsheidhi
Matamba
mdbc
Morinda officinalis
mornin' wood
noct-ambler
Nominal GDP
nonchurchgoers
not amount to anything
nullosetigera aequalis
object bus
phyzes
Poa prolixior
polygon lathe
processed material
processing cell
Provisionals
ratchetings
readout signal
recoverable ABEND
refractometric vacuum meter
religious reform
repertories
repogles
rural education
S factor
semi articulated rotor
series fuzing system
settle to do sth
should-cost review
Sommieres
split-screen technique
standard procedure instruction
stannous sulfate
starchlike
steamed dumpling
strassburgs
striddled
subdivergences
system perturbation
terminal input/output wait queue
Tillamook Head
toggle-lever arm
tripodalic dipygus
tsarina
tyrotoxism
UFO religionist
unglozed
unidirectional freezing
Ursus americanus
wet electrode
Zorpia