防污加工

By Gary Garriott Broadcast: July 29, 2003 This is Bill White with the VOA Special English Agriculture Report. Soil conservation efforts protect soil from wind and water that can blow or wash it away.

发表于:2018-12-07 / 阅读(92) / 评论(0) 分类 VOA2003(下)-农业与经济

World Action Needed to Prevent Widespread Antibiotic Resistance Since the discovery of penicillin in 1928, we have used antibiotics against a host of infections. But now, doctors are finding that more and more bacteria are resistant to even the stron

发表于:2018-12-08 / 阅读(64) / 评论(0) 分类 VOA标准英语2015年(十二月)

Lightning Helps Fertilize The Soil Our bodies need protein, and proteins contain nitrogen. The air we breathe has plenty of nitrogen to satisfy our needs. Butthat nitrogen is not available to us directly from the air. The only way we can get nitrogen

发表于:2018-12-31 / 阅读(51) / 评论(0) 分类 英语听力文摘 English Digest

Wouldnt it be great if we could trade genes with other species? For example, suppose you could trade the family cat your genes for intelligence for its genes for physical coordination! Well, okay, thats not likely to happen anytime soon. But DNA trad

发表于:2018-12-31 / 阅读(67) / 评论(0) 分类 英语听力文摘 English Digest

How Rocks Appear In Your Garden I wonder how many of us went out this past spring to get our gardens ready for planting, smug in the thought that last year we got rid of all the rocks. Theres that nice big mound of them in the corner of the garden wh

发表于:2018-12-31 / 阅读(46) / 评论(0) 分类 英语听力文摘 English Digest

Mars Rover to Begin Taking Soil Samples This Week Jessica Berman NASA engineers say the Mars rover will begin taking its first soil samples as soon as it departs the landing platform . Engineers say t

发表于:2019-01-04 / 阅读(107) / 评论(0) 分类 VOA2004(上)--各类新闻

The spokesman for the Lord's Resistance Army says Congolese forces and U.N. peacekeepers in Congo Kinshasa are preparing to move against the rebel group, which has yet to sign a peace deal to end a 20-year reign-of-terror in the region. VOA Correspo

发表于:2019-01-06 / 阅读(124) / 评论(0) 分类 VOA标准英语2008年(九月)

Antibiotics Breed Drug Resistance in Pigs Pigs given low doses of antibiotics had more E. coli in their guts, and that bacteria showed an increased resistance to antibiotics, according to new research. The study confirms the routine practice of feedi

发表于:2019-01-13 / 阅读(68) / 评论(0) 分类 VOA标准英语2012年(一月)

Vidushi Sinha | Washington, DC 18 May 2010 The World Health Organization calls antibiotic resistance one of the three greatest threats to human health. Experts fear antibiotic resistance puts humans in danger of becoming nearly defenseless against so

发表于:2019-01-13 / 阅读(111) / 评论(0) 分类 VOA标准英语2010年(五)月

Artemisinin, also known as QingHaoSu in Chinese, was discovered by Chinese scientist Tu Youyou. She received the 2015 Nobel Prize for Physiology and Medicine for the drug's discovery by her team more than three decades ago. In her speech at the Karol

发表于:2019-01-19 / 阅读(130) / 评论(0) 分类 2015CRI中国国际广播电台

For those of us lucky enough to always have enough food and water, it may be hard to imagine living through a drought. A drought occurs for a variety of reasons, usually including a lack of rainfall and warm temperatures.Soil moisture severely dwindl

发表于:2019-01-26 / 阅读(82) / 评论(0) 分类 英语听力文摘 English Digest

爱的反抗力 Muse - Resistance Resistance Muse Is your secret safe tonight? And are we out of sight? Or will our world come tumbling down? Will they find our hiding place? Is this our last embrace? Or will the walls start caving in? (It could be w

发表于:2019-02-05 / 阅读(76) / 评论(0) 分类 好听的英文歌曲

Drought For those of us lucky enough to always have enough food and water, it may be hard to imagine living through a drought . A drought occurs when for a variety of reasons, usually including a lack of rainfall and warm temperatures. Soil moisture

发表于:2019-02-16 / 阅读(43) / 评论(0) 分类 英语听力文摘 English Digest

Topics: Ask an American: driving while texting; ground versus soil versus land; as such; pupil versus people Words: eyewitness report to lose control apparent median to clip to flip distraction visual to glance manual cognitive to take (ones) mind of

发表于:2019-02-23 / 阅读(51) / 评论(0) 分类 美语听力 English Cafe

Tricking Your Muscles 肌肉欺骗了你? Heres a neat experiment: Find an open doorway and stand inside it, facing into the room. 做一个简单的实验:找一扇开着的门并站在门口,面向房间。 Now press your arms outward until t

发表于:2019-02-24 / 阅读(54) / 评论(0) 分类 英语听力文摘 English Digest

Not So Silly Geese 雁群为什么总排成一字或人字形队伍飞行呢?这是因为大雁飞行的路程很长,它们除了靠扇动翅膀飞行之外,也常利用上升气流在天空中滑翔,使翅膀得到间断地休息空隙,以节

发表于:2019-02-24 / 阅读(74) / 评论(0) 分类 英语听力文摘 English Digest

Don: Hey, Yael, Have you heard? We've discovered two new oceans? Yael: Where? D: On Mars. Well, they aren't there any longer, but they were there a few billion years ago. Y: I thought scientists weren't sure if Mars had oceans or not. D: They weren't

发表于:2019-02-24 / 阅读(55) / 评论(0) 分类 英语听力文摘 English Digest

Toxin-loving Trees 树木能调节气候,保持生态平衡,树木通过光合作用,吸进二氧化碳,吐出氧气,使空气清洁,新鲜。一亩树林放出的氧气够65人呼吸一辈子。树还能防风固沙,涵养水土,吸收各种粉

发表于:2019-02-24 / 阅读(154) / 评论(0) 分类 英语听力文摘 English Digest

How Rocks Appear In Your Garden 岩石,是在地质作用下形成的矿物聚合体,其中海面下的岩石称为礁、暗礁及暗沙,由一种或多种矿物组成的,具有一定结构构造的集合体,也有少数包含有生物的遗骸

发表于:2019-02-24 / 阅读(72) / 评论(0) 分类 英语听力文摘 English Digest

Sugar bowls and hole 孔隙是岩土固体矿物颗粒间的空间。岩土中直径大于1毫米、重力水可于其中自由运动的孔隙,是大孔隙(macro-pore,large pore)。岩土中直径为0.01~1毫米、重力水和毛管水可存其

发表于:2019-03-09 / 阅读(102) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
antiasthmas
antitoxoplasmic substance
anxious delirium
apolar interaction
artisan's lien
axseed
bacchant
ball-winnings
battered woman
bolometric stellar magnitude
Bucalemo
calltrop
car load lot
cause trouble by spreading rumors
chained sequential operation
characteristic polynomial
chelatometric
chiroptophobia
clenching
clervals
concaver
consumer device
cross-over flange
curbelo
delay of goods
deoxyribonucleic acid
deprecative
Dictyotosporites
Dipsacus atropurpureus
displacement of trachea
Drechsel's lest
drive at
Dzhugdzhur
effect machine
elaterometers
embryoma
epidermal fold
escipient
faiga
fast refractive infrared optical system
ferrimag
fractionising
front bearing spacer
fuel pit gate shield slab
gallicism
general purpose programming language
geo-acoustics
got your act together
horizontal balanced reciprocating compressor
idiopathic osteopsathyrosis
image spill
insider-outsider hypothesis
iodinating
keying action
Kivijärvi
lateral epicondylic ridge
Leurcristine
limiting draught
low limit
marine insurance conditions
misaffected
mobility aids
moneycentral
Mīshāb, Kūh-e
nickel copper ferrite
nurye
off-on control
orientation-dependent
pancreatic plexus
PBAs
periodicity of function
plain telegram
pre-teaching
Qudaym
rational homotopy
scanlan
secretariates
series manufacturing
shaped meat
shelga
shittiness
sky girl
sleepy cream
Sorok
spectral amplitude technique
starting tractive
synchro-torque receiver
tallies
thermodynamic function
threepage
Thyreoidine
Topka
traumatic bone cyst
tritancarboxylic acid
two-island
uncoincidental
unroping
variable field designator pseudooperation
warehouse-out inspection
wattle fencing
witout
xenon override