高原适应不全症

In 1940, North American Aviation designed the legendary P-51 Mustang in response to the British need for a high-performance fighter aircraft. The Mustang featured the most advanced laminar flow wing and a ducted cooling radiator positioned under the

发表于:2018-12-30 / 阅读(86) / 评论(0) 分类 国家地理2007年

Two pilots recently set a new altitude world record for gliders. A glider is an aircraft that does not have an engine. They are pulled into the air by powered airplanes and then released. They are designed to ride warm, rising air to gain altitude. T

发表于:2019-01-03 / 阅读(154) / 评论(0) 分类 2017年VOA慢速英语(九)月

U-2 Spy Plane Still Flying High One of the oldest planes the United States Air Force still flies is used to carry out some of America's most sensitive and critical missions. Whether it's aiding NATO troops in Afghanistan, providing surveillance over

发表于:2019-01-13 / 阅读(44) / 评论(0) 分类 VOA标准英语2011年(十二月)

World-Class Runners Flock to Kenyan Town Lornah Kiplagat is a Kenyan-born athlete who has won marathons throughout the world and holds several world records. She and her husband Pieter founded the High Altitude Training Center in Iten, Kenya, after r

发表于:2019-02-12 / 阅读(77) / 评论(0) 分类 VOA标准英语2012年(二月)

Sudden snowfall earlier this week blocked a national highway in Xinjiang Uygur Autonomous Region. The local traffic control department worked nearly 20 hours to clear the snow, and traffic in the area has now returned to normal. The snow started arou

发表于:2019-02-18 / 阅读(66) / 评论(0) 分类 cctv9英语新闻2015年

年底啦,如果你在计划过年去哪儿玩或是明年的出国游,不如看看权威旅游刊物Lonely Planet推荐的2017年十大旅游目的国!这些地方,好玩儿、人少、又不贵!跟Jenny, Spencer一起体验吧! 关键词:

发表于:2019-03-05 / 阅读(87) / 评论(0) 分类 美国文化脱口秀
学英语单词
a big gun
acid-insoluble residue
aesclepius
alloyed cementite
anti-lebanon (al jabal ash sharq)
assumed name
barista
bcob
bearing, roller
blade guide
Bordils
bruyn
cajuput
center well
Corinthian spirits
cortical cords
counter-caveat
DAMA (demand assignment multiple access)
Didynamia
direct-driven exciter
dopple-
dynamins
ecclesio-
electric salt bath furnace
eleuthere
empirical equation of state
facetted spur
ferreiras
ferrometry
flatend
forced line outage
fossae interpeduncularis
general maintenance
Gourine
granulity
Gui Hsien
hang heavy
harmless
heteroaromatics
Hofheim am Taunus
horsepowerhour
iron carbon
kakabekia umbellata
lacrimations
lochiosyte
logic chart
long butt
malposition
maximum span depth ratio
may've
Mendez shales
mess with sth
ministry of transportation communication
monadiary
needle plate
non-suffisance
noncold
obtrudings
Onamue
Panyu
performance warranty
phenthiol
photosemiconductor
podophthalmus nacreus
pooled estimate
potential plateau
process capability analysis
profound knowledge
QSA
quarter carcass
radiation-emitting
regret criterion
ribats
ribbon flower bed
rum-tum
sautering
septal tissue
set the land
sheath miles of fiber
SMSF
sound spectrograph
southern-style
static induction transistor
stationary satellite camera
sublethal level
sworn friend
tar on
tentiest
thick-film substrate
tolbutamide-triazinetrione
Torrinha
ultraslow
unsurvivable
Van Diemen's Land
vibratory roller
voice recorder
web media
wide-angle coordinator
wrought-iron sectional boiler
xylological
yellow-fleshed
zircaloy corrosion