[化] 1,2,3,4-萘四酮

[00:02.28]Dads Mandolin [00:06.89]My father was a self-taught mandolin player. [00:11.14]He was one of the best string instrument players in our town. [00:14.84]He could not read music, but if he heard a tune a few times, [00:19.17]he could play it.

发表于:2018-11-30 / 阅读(238) / 评论(0) 分类 英语专业晨读美文

nobody likes getting shots, but what if you could make the needles so tiny that they broke skin painlessly. engineers from top university have created such micro needles, made from major protein in silk, fibrolin. the work is in the journal of advanc

发表于:2018-12-02 / 阅读(154) / 评论(0) 分类 Scientific American(十二)月

My father was a self-taught mandolin player. He was one of the best string instrument players in our town. He could not read music, but if he heard a tune a few times, he could play it. When he was yo

发表于:2018-12-07 / 阅读(393) / 评论(0) 分类 英语精美散文22篇

From VOA Learning English, this is the Health Lifestyle report. When trying to make a successful career, which is better: being a generalist or a specialist? In other words, should you generalize and know a little about a lot of things? Or should you

发表于:2018-12-08 / 阅读(119) / 评论(0) 分类 2018年VOA慢速英语(十)月

Scientists Discover New Animal 科学家发现新的物种 From VOA Learning English, this is SCIENCE IN THE NEWS. Im June Simms. And Im Bob Doughty. Today we tell about a new animal species native to South America. We tell how agricultural chemical

发表于:2018-12-16 / 阅读(92) / 评论(0) 分类 2013年VOA慢速英语(八)月

Could a Tattoo Cost You a Job? 文身会让你失去工作么? In the 1960s U.S., a tattoo was usually a sign of anti-social or illegal activity. Few people had them. Today, at least one in five Americans has a tattoo, including sports stars, actors

发表于:2018-12-16 / 阅读(131) / 评论(0) 分类 2015年VOA慢速英语(六)月

Man Hopes to Define Every English Word with a Limerick There are many different methods for studying languages and learning new words. One man has come up with his own unusual way to define the meanings of words - through rhyming. He uses words that

发表于:2018-12-19 / 阅读(137) / 评论(0) 分类 2018年VOA慢速英语(三)月

24 MR. AND MRS. ANTOLINI had this very swanky apartment over on Sutton Place, with two steps that you go down to get in the living room, and a bar and all. I'd been there quite a few times, because after I left Elkton Hills Mr. Antolini came up to ou

发表于:2018-12-31 / 阅读(174) / 评论(0) 分类 有声英语文学名著

23 I MADE IT very snappy on the phone because I was afraid my parents would barge in on me right in the middle of it. They didn't, though. Mr. Antolini was very nice. He said I could come right over if I wanted to. I think I probably woke he and his

发表于:2018-12-31 / 阅读(134) / 评论(0) 分类 有声英语文学名著

An ass and an ox,fastened to the same yoke,were draging a waggon.While the ox was pulling with all his might he he broke a horn.The ass swore that he had got no help whatever from his weak companion.Exerting himself in the labour,the ox b

发表于:2019-01-09 / 阅读(218) / 评论(0) 分类 趣味英语

AS IT IS 2014-02-10 What Engineers Do, and How They Learn 工程师们是怎样炼成的,他们平时都做些什么 Hello, and welcome to As It Is from VOA Learning English. Im Christopher Cruise in Washington. Today on the program, we explore the c

发表于:2019-01-12 / 阅读(134) / 评论(0) 分类 2014年VOA慢速英语(二)月

Painting Captures Moments after Lincoln's Assassination 画家用绘画捕捉林肯遇刺时刻 A rare painting showing the moments after U.S. President Abraham Lincoln was assassinated has been cleaned, repaired and restored. The oil painting is nam

发表于:2019-01-12 / 阅读(119) / 评论(0) 分类 2016年VOA慢速英语(五)月

Jonah Hex. Are these the boys you wanted? You surely have done us quite a favor. A transaction is all it was. I'll collect my hundred dollar bounty on them and be on my way. From Superman and Spider Man to Josie and the Pussycats, Hollywood has a lon

发表于:2019-01-13 / 阅读(151) / 评论(0) 分类 VOA标准英语2010年(六)月

SCOTT SIMON, HOST: The fires in Northern California have reminded many Americans of the courage, the heroism of the men and women who fight fires in forests and wilderness. A film called Only The Brave is based on the true story of the 19 Granite Mou

发表于:2019-01-16 / 阅读(104) / 评论(0) 分类 2017年NPR美国国家公共电台10月

LONDON, Aug. 9 (Xinhua) -- Chen Ruolin collected a high 422.30 points for the title of women's 10m platform diving at London Olympic Games on Thursday. It is the 200th gold medal China won from all the summer Olympic Games it participated in. Brittan

发表于:2019-02-07 / 阅读(131) / 评论(0) 分类 英语新闻

地点:莫妮卡与钱德勒的婚礼现场 人物:莫妮卡,钱德勒,菲比,瑞秋 事件:婚礼仪式结束后,摄像师为大家拍照留念,菲比为了掩护瑞秋,谎称自己怀孕了。 Monica: What are you talking about? P

发表于:2019-02-16 / 阅读(169) / 评论(0) 分类 英语PK台

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发表于:2019-03-02 / 阅读(201) / 评论(0) 分类 加州英语分级GK

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发表于:2019-03-02 / 阅读(184) / 评论(0) 分类 加州英语分级GK

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发表于:2019-03-02 / 阅读(202) / 评论(0) 分类 加州英语分级GK

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发表于:2019-03-02 / 阅读(214) / 评论(0) 分类 加州英语分级GK
学英语单词
Abies georgei
adjusted decibels
affranchises
alkaline storage cell
array reduction analysis circuit
automatic mathematical translator
back clearance
barb words
base wire
bernoulli disk drive
bituminous joint
blockwood pavement
budget setting
by fours and fives
chip processes
comodule homomorphism
contactchart
crest of slope
curved frame
Date of Issue of Bill of Lading
distilling plant
dot system
double disk harrow
engineering dry specimen
eurhynchium asperisetum
ferraro
flair bartender
floated loan
fluorion
frontstead
galileo probe
gauze filter tray
genus neofibers
Gottfrieding
height of coupler centre
highway esthetic design
Idocin
inner child
integrated telecommunication system
intestinal trunk
john lennons
light observation quiet aircraft
m.e.s
magnet lag
mancophalic acid
maximum transmission unit (mtu)
Monterey Park
multiple attribute transformation
mystral
Mühlen
necessitudinary
notion of confidential interval
nutual action
oligogenics
overlapping observations
oxygen gas boosting
peg plan
perforated edge card
philargyry
philatelically
place a limit on
Podocarpium
power supply trace
projecting part
psammous
putting before
Qigu Township
quasi-regular left idea
Quercus lanceolata
reactor cavity cooling system
read-write disturbed one output signal
rectivenous
Rosa hezhangensis
Schaffer's reflex
speeches
spotting gain control
standard heat consumption
strigula elegans
structuralistically
substitutional acceptor
succeding transfors
superconformally
tea polishing machine
tension-spring
the eyes of a ship
the National Health Service
thiefed
thyroneural
to have sex
top bracket gasoline
toroid winding
torokos tanc (hungary)
tragedist
transition piece
Ulyatuy
vaccenic acid
vaginal sclerite
ventolin
vinymal
whomp up
wiseheart