残余问题

Unit 1:Establishing trade relation. The following conversation is between Mr.Gatty, an importer from Britain, and Mr.Dong,a director of Liming Foodstuffs factory. Mr Gatty is visiting the sample room of the factory and Mr Dong is accompanying with hi

发表于:2018-12-03 / 阅读(160) / 评论(0) 分类 外贸英语口语

This is the VOA Special English Agriculture Report. Cows, sheep, goats and other animals can get mastitis, an inflammation in the udder, the organ where milk is produced. Milk from an untreated cow is still relatively safe to drink. But the milk is

发表于:2018-12-07 / 阅读(146) / 评论(0) 分类 VOA慢速英语2008(十)月

If you imagine the 4,500-million-odd years of Earth's history compressed into a normal earthly day, 请你想像一下。把地球的45亿年历史压缩成普通的一天。 then life begins very early, about 4 A.M., with the rise of the first simpl

发表于:2018-12-18 / 阅读(122) / 评论(0) 分类 万物简史

Food Safety and The Delaney Clause on today's Congressional Moment The Delaney Clause was named after its sponsor, New York Congressman Jim Delaney, and was an addition to the Federal Food, Drug, and Cosmetic Act of 1958. Worried that pesticides and

发表于:2018-12-27 / 阅读(110) / 评论(0) 分类 英语时差8,16

(woman) Word comes from California of a new weapon in the war on household pests. Two scientists working for a firm in Anaheim, California, have developed a method to eliminate insects without using dangerous chemicals. The new poison? Hot air. The

发表于:2018-12-30 / 阅读(135) / 评论(0) 分类 托福听力短文

The antimicrobial triclosan is a common ingredient in hand soap. But it's also found in shampoos, deodorants, toothpaste, even lip gloss. So it's not too surprising that triclosan also shows up in blood, urine, breast milk and mucus. But here's the w

发表于:2019-01-02 / 阅读(116) / 评论(0) 分类 英伦广角

Smaller Fingers Mean More Sensitive Fingertips A study in the Journal of Neuroscience finds that people with smaller fingers have more sensitive fingertips, probably due to a higher concentration of touch receptors in a given area. Cynthia Graber rep

发表于:2019-01-02 / 阅读(156) / 评论(0) 分类 60秒科学

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?. [Spray sound.] Killing bugs? No. [Spray sound.] Deodorizing the bathroom? No. [Spray sound.] Checking for explosives, yes. Because chemists at the University of Califor

发表于:2019-01-08 / 阅读(178) / 评论(0) 分类 Scientific American(九)月

What prehistoric genius first discovered how to transform milk into delicious cheese? We may never find out, but we now know that humans were purposefully making cheese as early as 7,500 years ago. The finding is in the journal Nature. To make cheese

发表于:2019-01-08 / 阅读(150) / 评论(0) 分类 Scientific American(十二)月

Located in Nanping County, Aba Tibetan-Qiang Autonomous Prefecture, Jiuzhaigou Ravine stretches 80 kilometers in one direction and takes up an area of more than 60,000 hectares. The area consists of six scenic spotsChanghai, Jianyan, Nuorilang, Shuzh

发表于:2019-01-08 / 阅读(131) / 评论(0) 分类 旅游英语

The oil spill in the Gulf of Mexico is looming over the seafood industry. Prices are going up and the crisis could lead to more imported seafood in the coming months. But some people are questioning the safety of imported seafood. Lasting impact Tom

发表于:2019-01-13 / 阅读(105) / 评论(0) 分类 VOA标准英语2010年(五)月

威士忌副产品或会成为下一代汽车燃料 Scotland is the world's largest whisky producer. And Scottish professor has discovered how to take the waste products from distilling whisky and turn them into biobutanol, an alcohol that can be use

发表于:2019-01-14 / 阅读(124) / 评论(0) 分类 VOA标准英语2016年(一月)

DAVID GREENE, HOST: And now some bad news for bees. There is new evidence that they are being harmed by some widely used pesticides though it may be only if the bees already are vulnerable. Here's NPR's Dan Charles. DAN CHARLES, BYLINE: These pestici

发表于:2019-01-16 / 阅读(118) / 评论(0) 分类 2017年NPR美国国家公共电台7月

泰国农产品安全令人担忧 Thailand has long been recognized as a leading exporter of rice and other agricultural produce. But tests for pesticide residues are raising concerns about whether the food is safe. 长期以来,泰国是众所周知

发表于:2019-01-18 / 阅读(101) / 评论(0) 分类 VOA双语新闻 2012年10月

威士忌生物燃料技术 We know we shouldnt drink alcohol and drive. But whisky could help us be more environmentally friendly drivers. 谁都知道不能酒后驾车。但是,从威士忌副产品中可以提取出新的生物燃料给汽车提供

发表于:2019-01-19 / 阅读(88) / 评论(0) 分类 VOA双语新闻 2015年11月

You have bees to think every time you drizzle some honey into your tea. And the human-honey bee relationships is long standing. of honey bees in ancient Egympt. Record has been found that stone age bee harvest. But exactly when early farmers began to

发表于:2019-01-20 / 阅读(108) / 评论(0) 分类 2015年Scientific American(十一)月

What's the liveliest part of your kitchen, in terms of harboring bacteria? Is it the cutting board? The dish sponge? Or maybe your coffeemaker? Because even though caffeine has antibacterial effects, it turns out espresso machines can harbor a whole

发表于:2019-01-20 / 阅读(117) / 评论(0) 分类 2017年Scientific American(二)月

The document was released by the Central Committee of the Communist Party of China and the State Council. The policy paper underscores the importance of innovation and the supply-side structural reform in the agriculture sector. According to the docu

发表于:2019-02-14 / 阅读(112) / 评论(0) 分类 2016CRI中国国际广播电台

The antimicrobial triclosan is a common ingredient in hand soap. But it's also found in shampoos, deodorants, toothpaste, even lip gloss. So it's not too surprising that triclosan also shows up in blood, urine, breast milk and mucus. But here's the w

发表于:2019-02-14 / 阅读(230) / 评论(0) 分类 2016年Scientific American(八)月

Any simple organisms, alas, would have been baked away by the processes that turned ocean mud to stone. 哎呀,任何简单的生物都会在海洋污泥变成石头的过程中被烘烤没了。 Instead what we would see if we crunched up the rock

发表于:2019-02-17 / 阅读(159) / 评论(0) 分类 万物简史
学英语单词
adorableness
aji
alkynamide
all purpose fuel consumption
Bacillus zenkeri
balance character of non-return to zero
build-up member
Ceira
clitorism
closed reduction with trifan
constant position ratio
coronary embolism
critical capsizing moment
crossbower
define system
dowarie
durante bello
endaunt
equivalence variable
etaqualone
face of value
from one's teeth
gatpot flower
Gepatschhaus
gozes
guaranteed debentures
Gudumlund faience
harmonic telphone ringer
hickory tree
human protein C
Hutchins, Robert Maynard
hyperstonian space
intentively
joint air operations
kaczala
kadays gum
keiskei
key processes
lateral control departure parameter
Laveran's corpuscle
leucopterus
lower keel
lucken
lurch against
macro assembly instruction
makr-
median scatter loss
mixed transaction
mmf,m.m.f.
monoethyl choline
murderess
naphthalene halide
newton disk
Nisenan
NO-CCE
odontoloxia
operator induced failure
over the counter sales
overlapping splice
oxyphil(e) cell
oxyphile (lithophile)
passarinhoes
phthisiologist
pigmentum iodoformii compositum
poly-p-xylene
polyopia monophthalmica
poocha
pregl procedure
processing material for export
provisorium
quartrefoil
rattle sth off
Rawalpindi
rebuildable
return code register
rifle ball
right of man
ring joint flange
saperstein
Sea Islands
seagrove
secretive granule
soil-water zone
solicitudes
streetproofs
stuck rod margin(SRM)
subatomic
Suhdār
supersubstantially
tea-
telephic
three states of coupler operation
tided
timor-leste
TSSOP
ultraviolet lens
undrawn yarn
Utilities Sector
vestigial male
xanthoneurus
Xetra
zooanthropozoonosis