却剂比(放射性)活度

15 Talking to a Mechanic GLOSSARY mechanic a person whose job is to maintain and repair cars or other types ofmachines * Do you pay a mechanic to change the oil in your car, or do you do it yourself? engine the inside part of a car that makes it move

发表于:2018-12-03 / 阅读(216) / 评论(0) 分类 2011年ESL之旅行交通购物

发表于:2018-12-11 / 阅读(187) / 评论(0) 分类 VOA标准英语2014年(三月)

ROBERT SIEGEL, HOST: There are museums, and then, there are wonderfully specific museums. We're talking about such institutions as the American Toby Jug Museum, the German Watering Can Museum and, of course, the U.S. National Tick Museum. All of thes

发表于:2018-12-18 / 阅读(173) / 评论(0) 分类 2017年NPR美国国家公共电台6月

汽车: 轿车sedan 房车limo 油门accelerator 刹车brake 引擎engine 离合器clutch 排档gears 汽缸cylinder 遮阳板sun visor 保险带seat belt 保险杠bumper 方向灯blinker 尾灯tail lamp 轮胎tire 轮胎花纹thread 汽化剂carbu

发表于:2018-12-18 / 阅读(191) / 评论(0) 分类 英文语法词汇

This is Scientific America's Sixty-Second-Science. I am Steve Mirsky. Got a minute? Some interesting electrical activity in the clouds of ash drifting around Europe as a result of that Icelandic volcano. Models predicted that electrical charge should

发表于:2018-12-24 / 阅读(177) / 评论(0) 分类 Scientific American(五)月

Topics:-The Three Mile Island Accident; Famous Buildings: Chrysler Building; quarrel versus argument versus controversy; concerned versus worried; amounted to Words: nuclear reactor core coolant malfunction valve to be exposed guideline to evacuate t

发表于:2018-12-26 / 阅读(196) / 评论(0) 分类 美语听力 English Cafe

Why refrigerators hum? Why refrigerators hum,on toay's moment of science.On the recent program we have discussed how fluorocarboncoolant cools your food by coming to a boil in coils hidden in your fridge. How is this possible? When you boil water o

发表于:2018-12-31 / 阅读(180) / 评论(0) 分类 英语听力文摘 English Digest

The Rolling Boil That Cools Your Food When you think of something boiling, you probably picture a pot on the stove, but theres another kitchen appliance that brings liquid to a boil, not to heat food, but cool it. It sounds crazy, but household refri

发表于:2018-12-31 / 阅读(205) / 评论(0) 分类 英语听力文摘 English Digest

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? If you're too tired to think straight, it might be because parts of your brain are already asleep at the wheel. A team of neuroscientists from Washington State Unive

发表于:2019-01-08 / 阅读(162) / 评论(0) 分类 Scientific American(十一)月

This is the VOA Special English Health Report. How active you are early in life may affect how able-minded you are late in life. That was the finding of a new study of cognitive impairment, or a loss in mental abilities. The study involved more than

发表于:2019-01-11 / 阅读(200) / 评论(0) 分类 2010年VOA慢速英语(七)月

Using the Right Article What word appears most often in English? It's the, also known as the definite article. Its partner, the indefinite article a, is also among the top 10 most frequent words in English. According to Professor Elka Todeva of the S

发表于:2019-01-12 / 阅读(160) / 评论(0) 分类 2016年VOA慢速英语(三)月

李华正在兴致勃勃地给Larry将她去看医生的经过,没想到被Larry泼了一盆冷水。李华今天要学两个常用语,TMI和PDQ 。 LL: Oh, Li Hua, that is really TMI. I'm sorry you had to go to the doctor, but I really don't wan

发表于:2019-01-15 / 阅读(155) / 评论(0) 分类 美国之音《流行美语》

For our 10th anniversary my wife and I vacationed in Hawaii, where we went snorkeling. After an hour in the water everyone got back on the boat, except for one beautiful young woman and me. As I conti

发表于:2019-01-29 / 阅读(184) / 评论(0) 分类 趣味英语

special surplus 特别盈余 Special Suspense Account 特别暂记帐 special trust 特别信托 special warrant 特别拨款令;特别支款授权书 specific charge 特定押记 specific deduction

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

It seems like everyone is using Twitter these days. You know, sharing little messages with each other on phones and computers. It turns out that all these little messages, if you look at them all at once, become an easy way to find people, news and t

发表于:2019-02-05 / 阅读(146) / 评论(0) 分类 英语万花筒

BEIJING, March 29 (Xinhua) -- Chinese President Xi Jinping on Wednesday stressed the importance of afforestation and urged people, especially the young, to understand and protect nature via tree planting activities. Chinese PresidentXi Jinpingtalks w

发表于:2019-02-05 / 阅读(223) / 评论(0) 分类 cctv9英语新闻2017年

According to Ric Edelman, author of Ordinary People, Extraordinary Wealth, the purpose of a rsum is not to get a job, it's to get an interviewyou will get the job. A rsum should not list all your skills, but rather tease the employer with your achiev

发表于:2019-02-06 / 阅读(180) / 评论(0) 分类 实用英语

The purpose of a letter of applicationis to help the applicant obtain the job he is interested in. It should state clearly what position the applicant wants, and should tell what his abilities are and what he has to offer. It should provide a quick,

发表于:2019-02-18 / 阅读(204) / 评论(0) 分类 实用英语

有人常会觉得小孩子学语言学得比大人快,为什么呢?因为小孩子学语言不像我们死记文法,苦背单字。他们就是用所谓的pick up,看在什么场合,别人用什么字,就一个一个把它记下来。这样

发表于:2019-03-05 / 阅读(227) / 评论(0) 分类 英语口语

Larry告诉李华他连续几天给他哥哥打电话,可是总也找不到他。 LH: Larry, 你那么急着找你哥哥,有要紧的事吗? LL: No, not really. I just want to chit chat. LH: Chit chat是什么意思啊? LL: To Chit Chat is to t

发表于:2019-03-12 / 阅读(279) / 评论(0) 分类 英语口语
学英语单词
accrued cumulative dividends
adrenal cortexes
analytic program
anti comet tail gun
antijury
arcproof
ardant
assoiler
attraction between adjacent ships
auditory language
autotoxaemia
Ayvadzh
barium selenide
berners-lee
boardrooms
bowfront
callister
capital of Pakistan
chastenings
ciclonium bromide
class heterokontaes
concentricities
concertinaing
consumer-to-business
critical slowing-down
crowd-pleaser
dicotyls
direct method of isolation
document of school completion
double reduction gearing
down-beat
ephrons
Eupatorium tashiroi
excreta
Flannery O'Connor
flauntings
frena
Gaussian reduction method
gedle
Hershey bar
hunger-relief
idea bank
independent amplitude
ion beam sputtering
Jethro
kir royale
lagoonal
Larche, Col de (Maddalena, Colle della)
larmes
lateral terrace
Lesueur I.
levisoprenaline
lien securing claims for salvage
lohrs
Lymnaea
mail carrying charge
main propelling machinery room
marmand
motionary
move to tears
multiplayers
myeloma protein
Napier's rods
noncooperative games
nullifieth
oberkircher
ocean-racing cruiser
ODVA
orphing
packing coil
Pady
panellists
Payment Period
phase-contrast
Pirandellian
pseudologists
purplehead Brodiea
ramden
reciprocal-lattice point
rsv
run high
ruse of war
semen measurement
semiprone
sharing, time
sidero-
slow speed band
South Sea
standstill agreement
sunk into
super-renormalizable theory
synthetic estrogen
technical report
transmitted power meter
uderzo
undeceitful
vagotropism
verballing
vinyl chamber
vinylpyrrolidone vinylacetate copolymer
washbrew
yarn-dyed satin