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Acid Rain 酸雨 Damage from acid rain is widespread - not just in eastern North America, but throughout Europe, Japan, China, and Southeast Asia. Is the rain that's falling on your umbrella acidic? A listener's question -- on today's Earth and Sky. J

发表于:2018-12-07 / 阅读(146) / 评论(0) 分类 (科普英语)Earth and Sky

How does acid deposition affect human health? We eat food, drink water, and breathe air that has come in contact with acid deposition. Canadian and U.S. studies indicate that there is a link between t

发表于:2019-01-02 / 阅读(182) / 评论(0) 分类 知性英语

HEALTH REPORT - October 23, 2002: Folic Acid Reduces Fetal Deaths By Nancy Steinbach This is the VOA Special English Health Report. A new study in Sweden has confirmed another important health effect

发表于:2019-01-04 / 阅读(57) / 评论(0) 分类 健康与环境

Folic Acid Supplements Shown To Reduce Risk Of Autism Green, leafy vegetables, fruits and nuts naturally contain folate, a B vitamin that helps the body make healthy new cells. Most pre-natal vitamins include folic acid because it protects against de

发表于:2019-01-14 / 阅读(62) / 评论(0) 分类 VOA标准英语2013年(四月)

By Birungi Machrine Kampala 26 November 2007 Attacks using acid are becoming more frequent in Uganda. Up to 2003, there were only 145 recorded attacks, but over the last three years, there have already been 87. Survivors often suffer from severe emot

发表于:2019-01-16 / 阅读(111) / 评论(0) 分类 VOA常速英语2007年(十一月)

By Melinda Smith Washington, D.C. 07 June 2007 For years, doctors urged women to take folic acid if they planned to get pregnant. Then researchers discovered the nutrient helped reduce the risk of a heart attack. But now a new study shows folic acid

发表于:2019-01-16 / 阅读(101) / 评论(0) 分类 2007年VOA标准英语(六月)
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actual decimal point
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african ant bear
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alternating theorem
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antilambda hyperon
arachidate
archo-
arms-race
asymptotic plot
Biltāj
bito
calculatedness
cast-iron propeller
ceinture
Celtis koraiensis
charge driven piston mechanism
chip cleaner
clean bench
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DrFeelgood
effectiveness index
efferate
Elatostema crassiusculum
emissivity of surface
employer-subsidized
engine mission gauge
expressive aphasias
finning
flexible assembly system (fas)
gang bolt
Giaco Letto equivalent circuit
grease recovery
group performance
handspoke
insured's group emp name
Izbrizh'ye
Kakuda-misaki
kroons
lauric acids
light-energy distribution curve
louss
lycomarasmine
marginal utility theory
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megalocytivirus grouper iridovirus of taiwan
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Mondonesi's reflex
monolepta gracilipes
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noise equivalent reflectivity difference
Noludarum
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opet
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photo-achromatism
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reinaldo
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riverside open space
sabulography
Semen Allii Tuberosi
sensory stimuli
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