双极黑子

And after a while a pattern emerged. 久而久之,人们就归纳出一个模式 If you observe sun spots over several years, 若连续观察太阳黑子好几年 they come and go with an about an eleven year cycle. 会发现它们约每隔11年会周

发表于:2018-12-07 / 阅读(181) / 评论(0) 分类 太阳科普

RACHEL MARTIN, HOST: We try not to obsess about this too much, but we really do get to work very early around here. We don't get a whole lot of sunlight, especially in the winter months. So when you look around the newsroom, you see these special lam

发表于:2018-12-17 / 阅读(151) / 评论(0) 分类 2017年NPR美国国家公共电台11月

Next, the U.S. Army is on a mission to recruit 80,000 new soldiers by next year. It's easier said than done. Many people don't meet the military's requirements to join. Weight, age, drug use, medical conditions, criminal records, they can all keep so

发表于:2018-12-20 / 阅读(141) / 评论(0) 分类 CNN美国有线新闻2017年12月

Sunspots 太阳黑子 Is every part of the sun equally hot? 太阳的各个部分都一样热吗? No, they aren't. Some parts are colder than other parts. 不是的。有些地方比其他地方冷。 How do we know that fact? 我们是如何知道这

发表于:2019-01-10 / 阅读(163) / 评论(0) 分类 与美国小学生一起学英文第10册

By David McAlary Washington 07 March 2006 NCAR scientists Mausumi Dikpati (left), Peter Gilman, and Giuliana de Toma examine results from a new computer model of solar dynamics Researchers predict tha

发表于:2019-02-04 / 阅读(161) / 评论(0) 分类 2006年VOA标准英语(三月)

Voice 1 Hello. Im Rachel Hobson. Voice 2 And Im Mike Procter. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 3 I was in the tent

发表于:2019-02-14 / 阅读(155) / 评论(0) 分类 环球英语 Spotlight

16. UPBRAlD : REPROACH :: (A) dote : like (B) lal: : stray (C) vex : please (D) earn : desire (E) recast : explain Directions: Each passage in this group is followed by questions based on its content.

发表于:2019-02-21 / 阅读(252) / 评论(0) 分类 实用英语
学英语单词
aggregate screen
alternate optima
AND-NAND-OR-NOR
appear as
arbitral decision
ascending fan system
Bernard de Ventadour
bettern't
cash resoruce
CCL7-2
chronometrical
Ciampino
class trematodas
coal titmouse
color cinematography
consession
content theory
corpus lutein cyst
critical speed
damping ratio
decomposition rate of soil organic matter
dienamines
disc type induction ammeter
disembodied spirit
dragon worm
electronic clearing
euthanase
gas uptake
gatts
genus ibero-mesorniss
glow mode current
gro
gypsum plant
handbuild
heptagonal prism
high energy electron diffraction
horse blankets
i-prowed
import licence system
insert entire row
Ivinheima, R.
jacks-in-the-box
jalil
jew-hater
jundiai
Kenai Fjords National Park
kentigern
kepstra
Kilchrenan
know about
Led, light-emitting diode.
lilypad
locked in oscillator
longwards
Madakwe
memory address pointer
meridian seeking torque
Messrs.
Mexiconian
Murray River
Nakamura-gawa
natural feature on a map
navigational satellite receivers
nematologist
nerve-papilla
nonterminal word
noteful
order Eubryales
oriental
oxamides
phyllosticta oryzae
phytosphere
pints
plaidie
Poppenreuth
postvital
predator-prey relationship
probation division
proper hypersphere
reciprocal of amplification
rib scissors
ritzy
river-bed deformation
rocket missile
rumino-reticular
sagenites
sawmplar
seed shrimp
seven dances of life
Southern Cross
strobilanthes
syrosingopine
temper brittlement
teratoma of liver
thermal energy consumption
to strike a balance
tracking program
Tupi
up-card
webshite
what do you mean ...?
working normal wedge angle