12-钨硅酸;硅十二钨酸

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(209) / 评论(0) 分类 (科普英语)Earth and Sky

HEALTH REPORT — April 10, 2002: Treating Osteoporosis By Nancy Steinbach This is the VOA Special English Health Report. Medical researchers say they may have found a new effective treatment for the

发表于:2018-12-07 / 阅读(54) / 评论(0) 分类 健康与环境

[00:00.00]Dean accent tap generally speaking [00:05.15]迪安(男名) n.口音;音调 n.(自来水等的)龙头 一般说来 [00:10.29]eastern notice differently Ottawa [00:15.43]adj.东方的;东部的 vt. n.注意;认识 adv.不同地 n.渥太华

发表于:2018-12-13 / 阅读(259) / 评论(0) 分类 高中英语词汇

Item eight. Vocabulary. fossil, molecule, hydrogen, carbon, sulfur. Petroleum has been important since ancient times. In Latin, the name means rock oil. Petroleum is a fossil fuel. The liquid comes from the remains of plants and animals that died mil

发表于:2018-12-27 / 阅读(66) / 评论(0) 分类 step by step 3000 第一册

Hungry Lasagna So you made lasagna last night, and it was delicious. You saved the leftovers by wrapping aluminum foil over the top of the pan, and putting it in the fridge. When you get hungry today, you go to look for that lasagna, but it looks lik

发表于:2018-12-31 / 阅读(69) / 评论(0) 分类 英语听力文摘 English Digest

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(251) / 评论(0) 分类 知性英语

Section 28 Acid Rain 50 years ago, no one talked about acid rain. Then we didn't really know the harm it was causing to the world. Today almost every adult and school child is aware of acid rain and i

发表于:2019-01-02 / 阅读(133) / 评论(0) 分类 英语导读1000句

But there was something even better. Odyssey may not just have found ice. There may also be liquid water, and that means, there could be living creatures there too. Right now, there might be liquid wa

发表于:2019-01-02 / 阅读(113) / 评论(0) 分类 火星生命

Acid 酸 Why does the lemon taste sour? 为什么柠檬的味道很酸? It is because of the acid in a lemon. 因为柠檬里有酸。 Then what is acid? 那么什么是酸? All substances with a sour taste are kinds of acid. 所有带酸味的物质

发表于:2019-01-10 / 阅读(89) / 评论(0) 分类 与美国小学生一起学英文第12册

Can Folic Acid Prevent Childhood Autism? From VOA Learning English, this is the Health Report in Special English. A new study found that women who took folic acid supplements in early pregnancy were less likely to have a child with autism. Folic acid

发表于:2019-01-12 / 阅读(140) / 评论(0) 分类 2013年VOA慢速英语(五)月

AS IT IS 2016-02-13 Work Soothes Pain of Acid Attacks In India A caf in India is hiring women who once stayed in hiding after being attacked with acid. One woman, Dolly Kumari, says she stayed inside for two years after a man threw acid on her. He wa

发表于:2019-01-12 / 阅读(128) / 评论(0) 分类 2016年VOA慢速英语(二)月

Acid Attacks Continue in Cambodia Despite Harsher Punishments For Som Bunnarith, memories of the day acid violence changed his life forever are as vivid in his mind as the scars on his skin. When it splashed on me, it felt hot. It even burned through

发表于:2019-01-13 / 阅读(94) / 评论(0) 分类 VOA标准英语2012年(九月)

Pakistani Acid-Attack Victim Enjoys New Life in Texas After taking the oath of citizenship, Julie Aftab celebrated. I have waited eight-and-a-half years to hear those words, and those words mean so much to me, she said. Ten years ago, when she was 16

发表于:2019-01-13 / 阅读(85) / 评论(0) 分类 VOA标准英语2012年(八月)

Magnetic Ring Used to Stop Acid Reflux Heartburn is usually linked to gastric acid that reaches the esophagus when a weak muscle does not close as it should after swallowing. When stomach juices back up into the esophagus, the acid can cause a burnin

发表于:2019-01-14 / 阅读(123) / 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(171) / 评论(0) 分类 VOA常速英语2007年(十一月)

I love to eat sweets--candy, cookies, caramel apples--- everything. But I don't like getting cavities. Is there a way to eat lots of sugar without ruining your teeth? D: Interesting question. First, let's assume that you're not going to cut out sweet

发表于:2019-02-16 / 阅读(65) / 评论(0) 分类 英语听力文摘 English Digest

The Cleaning Power of Soft Drinks! 饮料的神奇清洁能力 Lets begin with a cleaning tip: If you have some tarnished or corroded brass that you want to clean, an old brass candlestick for example, you can use Coca-Cola, or any other cola soft dr

发表于:2019-02-24 / 阅读(67) / 评论(0) 分类 英语听力文摘 English Digest

Getting Rid Of Cavities 牙痛是继续忍受还是提前做好防护?爱护牙齿,每天的必修课。 M:Sorry,I'm late.I was brushing my teeth. W:Brushing your teeth?Right before 'A Moment Of Science'? Why? M:I'm trying to get rid of a cavity. W

发表于:2019-02-24 / 阅读(91) / 评论(0) 分类 英语听力文摘 English Digest

On September 18th, all New Zealand bread was going to have folic acid added to it. However, now the government has decided to wait three years. New Zealand and Australia have an agreement about food standards. Australia is going to add folic acid to

发表于:2019-02-25 / 阅读(149) / 评论(0) 分类 新西兰英语

Acid Water Yal: What are you doing outside, Don? It's about to rain. Don: I'm setting out bottles. Y: I can see that. But why? D: For my new business venture. Bottled rainwater! Y: As in living plastic bottles out in the rain and then selling them as

发表于:2019-03-09 / 阅读(284) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
a. musculophrenica
ADPRT
aegista impexa
aralia thomsoni seem.
Artemisia annua
autobiographism
automatic dispatching
bad credit
balance with removable pan
balanced method
block-type turbine
blue milk
braudy
Bulmanograptus
champion
chemical brownstain
ciardulli
continuous arch
cradle scaffold
d-phenylalanine mustard
daubery
dichloromalic acid
dissolved orgainic matter (dom)
earthing device for portable instrument
eccentric jaw relation
electrocyte
electronic print marking
enewsletter
engrape
epoxy polyamide adhesive
excessive rain
face nailing
facefucks
fallout shelters
familial hypophosphatemic rickets
for-rue
form normal
frantic
full beam detector
gertrude caroline ederles
ghost signal
Great Lakes ore carrier
heartedly
highteches
independent drive
intermediate dentin
internal lamination
jet pump diffuser
Kadazan
land-fall
lawn mowers
lawyer-readable
left eigenvectors
lever type grease gun
line print terminal
linear measurement
linguistic patterns
make out of
medical appliance
mepiperphenidol
Mimoso do Sul
mordant color
nervios
nihart
non metallic inorganic coating
noncomposite color picture signal
once-perfect
ordering strategy
palladium(ii) rhodanide
pentagonale
pentothals
permo-carboniferous system
petition for rehearing
phenoxy acid
plans for river basins
polyphenylene sulfide (pps)
postmaterialism
potiches
project bidding
prolonged gestation
protection from fust
recording function
recording trunk
rejuvenescency
releasing stuck by oil spotting
renal circuIation
Santa Cruz de la Palma
sarangis
Saxifraga perpusilla
single curvature parts
siphonic action
slip dislocation
sunbitterns
the Church of England
track gauge and level
travel(l)ing bed
unidirectional aerial
uvomorulin(E-cadherin)
Venus's slipper
visual-aural range
wash box
winnebago