clypeasteroid (plural clypeasteroids)
Any echinoderm of the order Clypeasteroida, of sand dollars.

This is Scientific American's 60-Second Science. I'm Karen Hopkin. Thisll just take a minute. Any school kid can tell you that comets are made of ice. That frozen water burning off is what gives comets their characteristic tails. But asteroids were g

发表于:2018-12-02 / 阅读(55) / 评论(0) 分类 Scientific American(四)月

The government's point man for responding to the Gulf Coast oil spill disaster says he expects BP to offer a new improved containment plan as early as today. NPR's Neda Ulaby has more. Admiral Thad Allen of the US Coast Guard appeared on CBS's Face T

发表于:2019-01-08 / 阅读(55) / 评论(0) 分类 2010年NPR美国国家公共电台6月

By Sabina Castelfranco Naples 19 April 2006 Chouimet Amirouche, front at center, and Mellouk Djelloul, rear at center with his face covered, both of Algeria, are detained by Italian police officers, i

发表于:2019-01-13 / 阅读(125) / 评论(0) 分类 2006年VOA标准英语(四月)

LOS ANGELES, June 24 (Xinhua) -- Near-Earth asteroid 2011 MD will whip past Earth on June 27, but will not pose any threat, NASA's Jet Propulsion Laboratory (JPL) said on Friday. The asteroid will pass only 12,000 kilometers (7,500 miles) above the E

发表于:2019-01-20 / 阅读(82) / 评论(0) 分类 英语新闻

By Sean Maroney New York 20 June 2007 In 1967, Israel countered what it saw as a threat of annihilation by its neighbors and defeated three Arab armies in six days. As a result, Israel nearly tripled the terroritory under its control and began an occ

发表于:2019-01-31 / 阅读(83) / 评论(0) 分类 2007年VOA标准英语(六月)

BEIJING, June 28 (Xinhuanet) -- A truck-sized asteroid passed over the Atlantic Ocean within 7,500 miles of the Earth on Monday, according to NASA's Jet Propulsion Laboratory. The space rock, called asteroid 2011 MD, is the second space rock to zip e

发表于:2019-02-15 / 阅读(57) / 评论(0) 分类 英语新闻
学英语单词
acridinium
adjuvant material
agglomeration economics
Ahwai
Almohad
Anouilh, Jean
anser erythropus
anticipative object
appropriateness of scale
arsenic copper
atmospheric fluid dynamics
Auxiliary Hydraulic System
Ayama
baby roller
bandgap narrowing
be up to sth
Brasov
calamine violet
cc.
CMC-VAP
configuration inspection
congenital absence of uterus
copti
Cryptobranchus
curling die
debenzylations
decigrades
documantation
double-stacked
eccrine poromatosis
ethylaldehyde
expanding bullet
family Chloranthaceae
feel one's way
finned can
flavi-
florische
forward draft
granular base
hand press
hapa haole
healful
hesses
home decoration
homokaryon
hyocholalic
indefensibly
innovation ability
iron(ii) oleate
Jean Harlow
landing craft amphibious assignment table
layer of third neurons
loop design
material physics
MDUO
methyl acetanilide
mole plants
motlier
narrow-band ternary
nicotinic effect
nimitz-class
non-gravity spring
nonthrombocytopenic purpura
nuclear-medicine
nucleination
optoelectronics
pantology
passgang
photoelectromotive
platen release lever
policeconstable
present value standard
Pružina
purifyingly
raccoon fox
radio-transmission
rod
roll thickness gauge
romicil
Safita
sanitary gymnastics
SAPMEA
seal-in(electrical circuit)
six-thousand
snot nose
space division switching system
sports culture
staggered cycle
sub-brand
tectonic burial metamorphism
three-plug connector
top symbol on left convention
trail-riding
Tungla, R.
ture decidua
untermensch
whole term insurance
wisconsin-milwaukee
woolmans
xenopids
Yambo, L.de