音标:[,tetrә,heksә'hedrәn] ;
二十四面体
n. A solid in the isometric system, bounded by
twenty-four equal triangular faces, four corresponding to each face of
the cube.

There are many arguments about the advantages and disadvantages of examinations. Some people think that examinations can help them review the lessons regularly, while others maintain that too many examinations have frustrated them. To me I think an e

发表于:2018-11-28 / 阅读(175) / 评论(0) 分类 疯狂英语易背作文

[00:00.00]Module 1 LEARNING METHODS [00:05.54]Unit 3 Some of the exams were very difficult. [00:11.24]4 Listen and complete. [00:15.06]Mum,I have my report here. [00:18.39]Great. Can you give it to me,please? [00:21.26]Sure. [00:22.78]Oh, this is for

发表于:2018-12-04 / 阅读(143) / 评论(0) 分类 外研社新标准初中英语九年级

New IMAX Space Documentary Brings Images to Life 新的3D IMXA给生活带来新的享受 What we watched then were blurry and grainy TV transmissions. Now, the 45-minute IMAX documentary puts the aud

发表于:2018-12-08 / 阅读(100) / 评论(0) 分类 VOA2005(下)--环境科学探索

This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang

发表于:2018-12-24 / 阅读(145) / 评论(0) 分类 Scientific American(一)月

哈利波特与魔法石18-Harry meets Ron Weasley

发表于:2018-12-31 / 阅读(221) / 评论(0) 分类 哈利波特与魔法石

Sharon went to Target with Paula. Target was having a sale. Everything was on sale. It was the holiday season. It was the day after Thanksgiving. It was Black Friday. Did someone die? Paula asked her mom. Her mom said no. Then why do they call it Bla

发表于:2019-01-02 / 阅读(114) / 评论(0) 分类 简单慢速英语阅读

Seamus Heaney The tightness and the nilness round that space when the car stops in the road, the troops inspect its make and number and, as one bends his face towards your window, you catch sight of more on a hill beyond, eyeing with intent down cra

发表于:2019-01-02 / 阅读(105) / 评论(0) 分类 英语诗歌

by Mignon Fogarty I have been deluged with questions about how to pronounce the name of the year. The two main contenders are twenty-ten and two thousand ten. Before the turn of the century, most people pronounced the years by chunking the first two

发表于:2019-01-02 / 阅读(113) / 评论(0) 分类 英语语法 Grammar Girl

T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗

发表于:2019-01-03 / 阅读(130) / 评论(0) 分类 医务英语

我是一名数学家,并且我希望站在你们的屋顶上。当Ron Eglash遇到许多非洲家庭时,他总是这样介绍。当时,他正在研究非洲的村落中随处可见的分形图案。

发表于:2019-01-05 / 阅读(171) / 评论(0) 分类 TED公开课:百字不如一数字

By Nancy Steinbach EDUCATION REPORT -July 25, 2002: SAT Examination This is the VOA Special English Education Report. Each year, millions of people around the world apply to study at American colleges

发表于:2019-01-06 / 阅读(118) / 评论(0) 分类 教育与新闻

Technology Report - Scientists Develop Smartphone App for Eye Exams This is the VOA Special English Technology Report. More than two hundred eighty million people around the world have vision problems or are blind. The World Health Organization says

发表于:2019-01-12 / 阅读(123) / 评论(0) 分类 2011年VOA慢速英语(五)月

'Terrorists in Love' Examines Islamic Radicals How does a young man transform from a law-abiding middle-class citizen into a terrorist? Ken Ballen, a former federal prosecutor, spent five years trying to find answers to that question. The result is a

发表于:2019-01-13 / 阅读(126) / 评论(0) 分类 VOA标准英语2011年(十一月)

GUY RAZ, HOST: Have you ever experienced hatred or - I mean, have you ever - I don't know. Has anybody ever said something to you because of who you are, because of your faith that has just been so incredibly hurtful? DALIA MOGAHED: Yes (laughter), a

发表于:2019-01-17 / 阅读(152) / 评论(0) 分类 2017年NPR美国国家公共电台4月

By Deborah Tate Washington 18 July 2006 The Bush administration's nuclear accord with the Indian government was the focus of a Senate committee hearing Tuesday, with witnesses underscoring the benefits to both the United States and India. ---------

发表于:2019-02-03 / 阅读(185) / 评论(0) 分类 2006年VOA标准英语(七月)

Champions [verse 1] moment of silence for the champions for those who make going hard a lifestyle never wait for nothing got to get it right now i'm in the spotlight when they turn the lights down only the champs go the hardest in the 12th round i lo

发表于:2019-02-03 / 阅读(116) / 评论(0) 分类 好听的英文歌曲

庆祝湖人夺冠新单:Ron Artest - Champions Artist:Ron Artest Song:Champions [verse 1] moment of silence for the champions for those who make going hard a lifestyle never wait for nothing got to get it right now i'm in the spotlight when th

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Pollster Dalia Mogahed 分享了一些关于埃及人对于阿拉伯之春的态度的令人意外的数据主要集中于女性在导致变革中起到的角色。

发表于:2019-02-05 / 阅读(205) / 评论(0) 分类 TED公开课:告女性说

BUENOS AIRES, Dec. 7 (Xinhua) -- Former Manchester United and Argentina midfielder Juan Sebastian Veron has confirmed he will play in Argentina's fifth division next year. The 37-year-old ended his career with top-flight side Estudiantes in June but

发表于:2019-02-13 / 阅读(227) / 评论(0) 分类 英语新闻

10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur

发表于:2019-02-17 / 阅读(155) / 评论(0) 分类 万物简史
学英语单词
actionless
adenoma sebaceum
allsport
augustins
bandhnu
biosemiotics
bractamine
Bryant's ampulla
bulb stem
butrint
cam-river
carry-case
cephalic-medullar angle
charcoal grays
coastline of pacific type
cremations
cubify
currency flows
Dendrobium findlayanum
designation-of-origin
dioptric apparatus
diversifies
dyslipoproteinemia
e ray (extraordinary ray)
equivalent simple stress
expansion fog
expulsor
family cercopidaes
feline leukosis-sarcoma virus
firming chisel
fredrikson
galerius
go on duty
golden duck
gramenivorous
gravity allocation
guifu lizhong pills
haematopoieses
hendiadyses
hepatoid
heteromorphic incompatibility
hpvs
imbricate aestivation
incurred
indirect cooling
infinite electrode
infrastructure
insulin shock therapies
iron(iii) arsenite
Knight of Labor
left lumbar trunk
lenghts
linear line congruence
madid
marine indicator species
Markovnikov's rule
medium salinity water
microgroove stylus
monetary institution
mountain top v.o.r.
non-contraband goods
norsympatol
organic insecticide
over optimism
oxy hydrogen welding
painted beauties
pointed stake
positive separation
potatos
precalculated aiming point
propellant silo
pseudopodium
pulse resistance
quarter on
redividing
reinfeoff
reinfestation
relatively uniformly convergent
renewance
risha
rokat
Salmerón
secondary reformer
semantic
serenda
shiningness
single contact bulb
sodium-graphite reactor
St-Mards-en-Othe
star configuration
strangulated
three-value simulation
tub bath
two-motored airplane
uday
underbite
unsuspectedly
unwrastly
uranium minerals
utility modifier statement
visual access
yoke mooring system