[化] 加四乙铅; 乙基化
[医] 乙基化[作用]

AS IT IS 2014-05-25 Scientists Search for New Ways to Stop Mosquitoes 科学家们寻找新的方法来对付蚊子 The sound of a mosquito can mean trouble in many parts of the world. The bite of a mosquito can be deadly. Today, we will hear about s

发表于:2018-12-08 / 阅读(182) / 评论(0) 分类 2014年VOA慢速英语(五)月

Following the historic summit between President Donald Trump and North Korean Chairman Kim Jong-un, Secretary of State Mike Pompeo met with the foreign ministers of South Korea, Japan, and later China to brief them on the way forward with North Korea

发表于:2018-12-08 / 阅读(111) / 评论(0) 分类 VOA标准英语2018年(六月)

London Terror Probe Traces Path to Radicalization, via Somalia In the days since the killing, it's emerged that one of the suspects, Michael Adebolajo, was arrested in Kenya in 2010, accused of seeking training with terror group al-Shabab in neighbor

发表于:2018-12-16 / 阅读(115) / 评论(0) 分类 VOA标准英语2013年(六月)

AILSA CHANG, HOST: The leaders of the rival Koreas have agreed to work towards formally ending the Korean War and to seek a nuclear-free peninsula. That agreement came out of a day-long and historic summit between North Korea's Kim Jong Un and South

发表于:2018-12-17 / 阅读(140) / 评论(0) 分类 2018年NPR美国国家公共电台4月

美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 630,000 people died of malaria-related

发表于:2018-12-19 / 阅读(135) / 评论(0) 分类 VOA双语新闻 2014年1月

Pizza Hut is one of the worlds best-known pizza restaurants. It was founded in 1958 in Kansas, USA, by brothers Dan and Frank Carney. Twenty years later, it was bought by Pepsico. Pizza Hut offers dine-in, takeaway and home delivery options in nearly

发表于:2019-01-01 / 阅读(140) / 评论(0) 分类 各大品牌英文介绍

Daddy, lets order a pizza, Billy said. That sounds like a good idea, said his dad. They looked at a menu they had at home. What kind do you want? his dad asked. Billy wanted a large pizza. He wanted a pizza with four toppings. He wanted cheese, peppe

发表于:2019-01-02 / 阅读(154) / 评论(0) 分类 简单慢速英语阅读

A South Korean official says North Koreas leader commented that he is committed to denuclearization of the Korean Peninsula. National security advisor Chung Eui-yong also said that the leaders of North and South Korea are to meet in the capital of No

发表于:2019-01-03 / 阅读(153) / 评论(0) 分类 2018年VOA慢速英语(九)月

Steve: Hi, this is Steve. I'd like to talk about pizza. Pizza is my favorite food. I like it because you can have pizza every day and it can be different each time. My favorite toppings on pizza are pepperoni, mushrooms, basil, garlic. I like lots of

发表于:2019-01-08 / 阅读(121) / 评论(0) 分类 原版英语对话1000个

I was very delighted to hear the topics and the briefing that Dr Muhammed ul-Qadri gave, especially on the aspect of de-radicalization of the youth What is being called the Western world's first anti-terror camp for young Muslims is being held in Bri

发表于:2019-01-13 / 阅读(130) / 评论(0) 分类 VOA标准英语2010年(八)月

Promising Mosquito Repellent Announced美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 6

发表于:2019-01-14 / 阅读(139) / 评论(0) 分类 VOA标准英语2014年(一月)

As Egypt's Jails Fill, Growing Fears Of A Rise In Radicalization DAVID GREENE, HOST: Egypt has a history of breeding militancy in its jails. Some of the figures who inspired the birth of al-Qaida became extremists during their abuse in prison there.

发表于:2019-01-17 / 阅读(131) / 评论(0) 分类 2016年NPR美国国家公共电台8月

LULU GARCIA-NAVARRO, HOST: We now get a rare look inside a French prison. Officials in France say prisons have become incubators of extremism. Many of the homegrown terrorists who've launched attacks in places like Paris and Brussels recently were ra

发表于:2019-01-17 / 阅读(118) / 评论(0) 分类 2017年NPR美国国家公共电台6月

One Police stops on police vehicle outside one Victoria's Bar. After the preparation, as necessary arrests?, this liquor drive slightly mixes. Suddenly he sees to have a young people shakely goes out from bar, spend the many figures only then finds

发表于:2019-01-17 / 阅读(107) / 评论(0) 分类 白领英语晨读

Khizr Khan Says He Would Live This Week A 'Hundred Million Times' Over KELLY MCEVERS, HOST: Khizr Khan can't go anywhere without being noticed. People hold doors for him, cry when they see him, even jump out of cars to hug him. He became known around

发表于:2019-02-13 / 阅读(269) / 评论(0) 分类 2016年NPR美国国家公共电台8月

During his telephone conversation with US Secretary of State John Kerry, Wang Yi underscored China's firm stand on promoting the elimination of nuclear weapons on the Korean Peninsula, and the safeguarding of regional peace and stability. Both sides

发表于:2019-02-14 / 阅读(146) / 评论(0) 分类 2016CRI中国国际广播电台

On its website, a history of the company makes no mention of leador indeed of Thomas Midgleybut simply refers to the original product as containing a certain combination of chemicals. 在它的网站上,公司的历史没有提及铅──也没有提

发表于:2019-02-17 / 阅读(131) / 评论(0) 分类 万物简史

By counting back through these layers and measuring the amount of lead in each, he could work out global lead concentrations at any time for hundreds, or even thousands, of years. The notion became the foundation of ice core studies, on which much mo

发表于:2019-02-17 / 阅读(149) / 评论(0) 分类 万物简史

Lead is a neurotoxin. Get too much of it and you can irreparably damage the brain and central nervous system. Among the many symptoms associated with overexposure are blindness, insomnia, kidney failure, hearing loss, cancer, palsies, and convulsions

发表于:2019-02-17 / 阅读(148) / 评论(0) 分类 万物简史

If you were going to a restaurant and wanted a healthier option, 如果你去饭店,你想吃得健康一点, which would you choose, grilled or fried chicken? 你会选择哪种食品呢,烤鸡还是炸鸡? Now most people would answer grill

发表于:2019-02-21 / 阅读(162) / 评论(0) 分类 TED演讲教育篇
学英语单词
acoraceaes
address reference number
AIBG
astraiest
bawbles
be pressed for time
be ready to
be sorry about
bi-directionally
bonce
butt joint with double straps
carbonate of lime
catch someone off one's guard
Cavea tanguensis
centralized organization
Chistochina
chivy
chromoshadow
commedia erudita
concertinaed
construction of legal system in water
continuest
Cucurbitariaceae
DEGSVC
didge
dogmatizes
Dumlu
dunye
environmental conditions
essayer
flat trajectory fire
guerry
Hamill, Dorothy
hatch cleat
hermeline
hughe's telegraph
ibsenian
industrial Ethernet
informative
intercedings
international telephone consulative committee
ionization chamber exposure ratemeter
Kar.
kasch
kasyapa
kiddin'
Krev-1
lathlike
light-fingering
livorno
mangold(mangel)
marriage broking
marrow sea deficiency
meningopneumonitis virus
Midpalmar
monetary economics
nitro-trichloromethane
Nitroponee
nonrationalized equation
ostracion meleagris
Poa nimuana
post liberalism
postville
pressurized compartment
rami abdominales
reactor power noise
rear-end stop lamp
repeated crossing
Rhododendron glanduliferum
road safety act
Robert's reagent
rock layer mechanics
Roederer's ecchymoses
sea-room
ship heading mark
shot borehole
slangrel
snag-resistence
Stachys aspera
static self potential
Stepan
stratum disjunction
swap, pin
switchboard cell
thermal light
to toss something
transvestists
triplopia
tropacaine
tubicolous
two-hole
Uhlenhuth's test
unlocking key
velvet osier
vendor inspection
von Aldor's test
wetting transition
white tie and tailss
William James Durant
Xnix
Zeuthen-Segre invariant
zonulotome