滋养层细胞柱

By Caty Weaver Broadcast: July 25, 2003 This is Bill White with the VOA Special English Environment Report. Researchers say they have found a way to reduce the cost of some 1)fuel cell production. The

发表于:2018-12-01 / 阅读(332) / 评论(0) 分类 VOA2003(下)-环境与健康

Staircase Intonation So what is intonation in American English? What do Americans do? We go up and down staircases. We start high and end low. Every time we want to stress a word or an idea, we just start a new staircase. That sounds simple enough,

发表于:2018-12-02 / 阅读(305) / 评论(0) 分类 美语口音训练第一册

Unit 6 By the time I got outside, [00:07.14]the bus had already left. [00:10.03]SECTION B [00:11.87]1a Put these words in the correct columns [00:16.86]in the chart. [00:19.03](Some words can go in more than one column.) [00:23.50]fool costume [00:27

发表于:2018-12-10 / 阅读(306) / 评论(0) 分类 初中英语山东版九年级(全一册)

UNIT 5 I like music that I can dance to. [00:09.02]I only eat food that tastes good. [00:12.66]Section 1 Before You Read [00:15.37]GROUPWORK [00:17.72]Look at the diets of two people. [00:20.68]Discuss which diet is healthier and why. [00:24.50]LINDA

发表于:2018-12-10 / 阅读(398) / 评论(0) 分类 初中英语山东版八年级下

[00:00.00]Unit 2 第二单元 [00:06.95]Exercise 1 练习一 [00:10.79]Listen and write the words in the correct column. [00:14.79]these [00:20.14]year [00:26.70]like [00:32.94]minute [00:39.63]Chinese [00:47.28]red [00:53.19]ear [00:58.54]pen

发表于:2018-12-12 / 阅读(200) / 评论(0) 分类 新标准小学英语活动用书6册(一年级起点)

[ti:UNIT 1 A Trip to Beijing Lesson 8] [0:01.395]Unit 1 [0:03.426]A Trip to Beijing [0:06.318]Lesson 8 [0:08.234]Unit Review [0:10.902]Ⅰ. [0:12.257]Building Your Vocabulary [0:15.151]A. [0:16.433]Fill in the blank with the proper word. [0:19.751]Th

发表于:2018-12-13 / 阅读(307) / 评论(0) 分类 河北教育初中英语(初中起点)七年级下册

Unit 7 How do you make a banana smoothie? [00:04.99]SECTION A [00:07.92]1b Listen and put the instructions in the correct order. [00:55.14]2a Listen to Maria and Katie making fruit salad. [01:02.41]Write the names of the ingredients under Now much or

发表于:2018-12-13 / 阅读(340) / 评论(0) 分类 新目标初中英语八年级上

For something that could revolutionize the world, its come along very slowly. The fuel cell was invented in 1839, but there was little development until the 1950s when NASA started to use them in space where they are still used today. Now, after yea

发表于:2018-12-30 / 阅读(250) / 评论(0) 分类 国家地理2008年

发表于:2019-01-03 / 阅读(245) / 评论(0) 分类 医务英语

After a beautiful purebred puppy wandered onto our back porch and made himself at home, my husband composed an ad for the

发表于:2019-01-03 / 阅读(266) / 评论(0) 分类 英汉幽默故事选读

By Carol Pearson Washington 25 September 2007 A lot of people wonder about the impact cell phones might have on their health. And now a new study shows that heavy mobile, or cell, phone use may result in hearing loss. VOA's Carol Pearson reports. As

发表于:2019-01-11 / 阅读(236) / 评论(0) 分类 2007年VOA标准英语(九月)

By Bill Rodgers Washington 19 May 2008 Cell phones are an example of what is sometimes now called leapfrog technology, a product that allows developing nations the benefits of a reliable and extensive communications network without the heavy investme

发表于:2019-01-13 / 阅读(213) / 评论(0) 分类 VOA标准英语2008年(五月)

MARY LOUISE KELLY, HOST: On page A23 of today's Washington Post you can find the last column Jamal Khashoggi wrote before he disappeared. Khashoggi went missing on October 2. It looks increasingly likely that he is dead, a reality President Trump ack

发表于:2019-01-17 / 阅读(226) / 评论(0) 分类 2018年NPR美国国家公共电台10月

By Victoria Cavaliere New York 16 October 2007 An annual stem cell research conference in New York has been bringing together some of the field's top scientists to discuss breakthroughs in stem cell research and what proponents call its long-term app

发表于:2019-01-31 / 阅读(247) / 评论(0) 分类 2007年VOA常速英语(十月)

By Paul Sisco Washington 17 April 2008 Federal regulators in Washington have approved plans to upgrade the nation's Emergency Alert System to include text messages to cellphones and other mobile devices. VOA's Paul Sisco has more in this Searching fo

发表于:2019-01-31 / 阅读(224) / 评论(0) 分类 VOA常速英语2008年(四月)

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(398) / 评论(0) 分类 英语新闻

Since the April 20 explosion and fire that sank the BP Deepwater Horizon off-shore oil rig, about 800,000 liters of crude oil a day have been spewing from the broken well into the Gulf of Mexico. The massive spill is threatening marine life, commerci

发表于:2019-02-05 / 阅读(303) / 评论(0) 分类 VOA标准英语2010年(五)月

今天我们要学的词是 in the know。In the know 意思是随时了解情况。He's a political junkie. He even has apps on his cell phone about the presidential election to keep himself in the know. 他特别关心政治,手机上都下载了总

发表于:2019-02-07 / 阅读(162) / 评论(0) 分类 英语单词荟萃

Turn Off Your Cell Phone 关掉你的手机 We went to the movie the other night. I sat in an aisle seat as I usually do, because it feels a little roomier. Just as the feature was about to start, a blonde from the center of the row got up and starte

发表于:2019-02-07 / 阅读(327) / 评论(0) 分类 趣味英语

WASHINGTON, May 11 (Xinhua) -- Researchers at Brigham and Women 's Hospital (BWH), a teaching affiliate of Harvard Medical School, have identified(鉴定) a human lung stem cell that is self-renewing and capable of forming and integrating multiple bi

发表于:2019-02-18 / 阅读(306) / 评论(0) 分类 英语新闻
学英语单词
acclimatization to altitude
achroamyloid protein
apyretic
ascititious
aspidiotus destructor
aural masking
be opposite to
behavior of average cost
Better be safe than sorry.
bio-chemists
Bordeaux I, II, and III, Universities of
brake drum lathe
Carex yunlingensis
carpinus turczaninowii var. ovalifolia winkl.
closely held corporations
codlin moth
colloidal coefficient
color phase
come off one's perch
conjuctivae
connection demultiplexing
crafters
cryostat
Cutaneous.
cyclohexaglucanase
Damascenus, Johannes
darkblue
data-directed input/output
disablements
disconnected cracks
double derivative action
driving simulator
duodecimos
edestan
endpoint list
epistropheus
erythrorhizon
ethyl-para-aminobenzoate
exots
floating point mode
Fontanellato
genus gliricidias
grouting curtain
Guamués, R.
gyrohedral class
Haut-Rhin, Dép.du
hectopsyllid
helfrechts
high frequency plasmatron
highly multicollinear regressor
homolosine projections
IF modulator
integration routine
Kaukauveld
kiln burnt brick
knockout jacket
labial cavity
lanthanum metaphosphate
Larix himalaica
lifted
massor dahl
Mehedeby
monetary liability
monitor jack
nasobregmatic arc
neutralization escape mutant
octohedra
Orcia, Torrente
oxidation process
pair bonding
peroxynitrous acid
phosphinico
Polybius square
R-O
refuse compartment
rights and liabilities
rinse with
Rosicrucians
rubus cochinchinensis tratt
scale equivalent
Shawia
Sherman antitrust act
sinas
South African English
spano-
stalling load
static random-access memory
stock management
strategy economics
Sulcosyn
to allure sb into...
tooth bulb
ultra-clay
unpunishingly
vanbrughs
var. v. mediana colli
vertical transom
virgin gas
wind generators
wonderdrugs
wound effect
Zernike test