[化] 胍乙基纤维素

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(198) / 评论(0) 分类 2014年VOA慢速英语(五)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(152) / 评论(0) 分类 VOA双语新闻 2014年1月

Don: Time to go again to the A Moment of Science mailbag. Yal: A listener writes: Dear A Moment of Science, Scientists know that one day we'll run out of oil and other natural sources of energy. Beyond solar power and wind power and ethanol, what are

发表于:2018-12-27 / 阅读(142) / 评论(0) 分类 英语时差8,16

The videos on Love Stories TV website have drama, romance, and beautiful clothes mixed with costly settings and highly technical camera shots. Is it Hollywood or is it real life? Sometimes the line seems to disappear. Love Stories TV shows videos of

发表于:2019-01-03 / 阅读(152) / 评论(0) 分类 2018年VOA慢速英语(四)月

I might have been a singer Who sailed around the world A gambler who wins millions And spent it all on girls I might have been a poet Who walked upon the moon A scientist who would tell the world I discovered something new I might have loved a king

发表于:2019-01-05 / 阅读(134) / 评论(0) 分类 美国乡村音乐

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This'll just take a minute. It sounds like something out of a bad science fiction novel. During World War II, a fungus called Tricoderma reesei ate its way through US military unifo

发表于:2019-01-08 / 阅读(174) / 评论(0) 分类 Scientific American(五)月

By Phuong Tran Dakar 16 March 2007 In some African countries when a woman's husband dies, it is common for her to marry one of his brothers. For many families, this ensures someone will take care of the widow and her children, and that she remains p

发表于:2019-01-08 / 阅读(207) / 评论(0) 分类 2007年VOA标准英语(三月)

Scientists in Brazil are turning fruit fibers into car parts. At a recent meeting of the American Chemical Society, the researchers described their work in making the next generation of automotive parts made from natural fibers from bananas, pineappl

发表于:2019-01-09 / 阅读(156) / 评论(0) 分类 VOA标准英语2011年(四月)

Dido,一个前途无量的女孩, 正在用她的才华征服着全世界的歌迷。 国乐坛史上最畅销女歌手,两张专辑全球销售破2200万张 2003年九月《漂泊的心Life For Rent》全球狂卖850万张,在22国拿下冠军,英国七白金成为年度销售冠军专辑。1999年首张专辑《无天使No Angel》目前

发表于:2019-01-09 / 阅读(192) / 评论(0) 分类 音乐咖啡厅

他们常说,漂泊的人会在Dido的歌声中重获温暖。很佩服这样的歌手,触景生情会想起,即使已是五年。 Quiet Times- Dido You ask me where I go tonight I go back to today last year. Me and you had to make each other happier, now there's hope with everything. I

发表于:2019-01-09 / 阅读(261) / 评论(0) 分类 音乐咖啡厅

英文歌词: Two weeks away It feels like the whole world shouldve changed But Im home now And things still look the same I think Ill leave it to tomorrow till unpack Try to forget for one more night That Im back in my flat on the road Where the cars n

发表于:2019-01-10 / 阅读(215) / 评论(0) 分类 音乐咖啡厅

Turning Cigarette Butts to Batteries 烟头转变成电池 If you see a person carelessly throw a cigarette to the ground, what are you likely to think? That depends. If you hate people throwing things on the ground, you might think, That person shou

发表于:2019-01-12 / 阅读(153) / 评论(0) 分类 2014年VOA慢速英语(九)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(127) / 评论(0) 分类 白领英语晨读

Kurt Vonnegut The Summer had died peacefully in its sleep, and Autumn, as soft-spoken executrix, was locking life up safely until Spring came to claim it. At one with this sad, sweet allegory outside the kitchen window of her small home was Ellen Bow

发表于:2019-01-23 / 阅读(212) / 评论(0) 分类 英文短篇小说

1、Mandarin 普通话 2、Zen 禅 3、feng shui 风水 4、yin yang 阴阳 5、tai chi 太极 6、Taoism 道 7、kongfu 功夫 8、kowtow 叩头 9、mahjong 麻将 10、tofu 豆腐 11、lychee 荔枝 12、longan 龙眼 13、chop-suey 杂碎 14、won

发表于:2019-02-01 / 阅读(152) / 评论(0) 分类 英文语法词汇

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(148) / 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(165) / 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(168) / 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(186) / 评论(0) 分类 TED演讲教育篇

台湾籍旅美老师今天交给我们的句子是: It's not rocket science: Focus on lean protein, healthy fats and non-processed, unrefined carbohydrates such as vegetables, beans, whole grains and fruit. 这不难懂:多摄取低脂肉类、健

发表于:2019-02-22 / 阅读(160) / 评论(0) 分类 留美老师带你每日说英文
学英语单词
abnormal lapse
ac-conductance technique
actitis hypoleucoss
adducting
Allium neopolitanum
andersonstowns
Andros, Sir Edmund
apiarians
base eatalysis
battering rams
blocking ast
bournonites
Brasenia schreberi
caroma
cataleptoid state
cave flower
cetineite
chip culture
coccygeal artery
comb honey
conventional indication
craftholes
declare illegitimate
dexivacaine
electrion oil
electrodynamometer voltmeter
failure checking
fire-protection ring
fonticulus anterolateralis
fore-order
freehubs
gage pointer
Gauss distribution
geographic entity
gleied
go on fire
graphical electrical symbol
haemanthuss
hand-knotted carpet
hylophage
ILAFA
individual information
infrared night-vision system
judgement of paris
Kalmia latifolia
Khālispur
Kilteel
knight's tours
lagging phase angle
llus
lymphitis
Macpherson's Str.
magawatt-hour
mantei
manuevering
marine cleaning disk
marionberry
mean level of earth's surface
method of non-destructive examination
methoxy-tert-amylbenzene
munidopsis centrina
nonpeaceful
on the tip of the tongue
orthogonal complete reducibility
perfectism
photoelectronic imaging
pimplous
planaperturate
pollenger
punto
quantimete
quintuple-nerved
raynal
receivership
refinances
refirings
rey-grass
San Pedro de Arimena
sauce vinaigrette
save our ship
short flint glass
sign post
slide guide bracket
softening spring
stornello
subpictures
supply riser
surface specific resistance
terminal data processing
thallic perchlorate
the criminal
tilting cart
tortricid
treehugger
tsedenbals
tubeflower
uproarer
Valle de Trujillo
valve overlap duration
WinRT
xylem initial
zero-phase lines