羊膜嵴椎动物

Fish Use Whole Bodies When They Eat Fish are animals that live in the water. They are also vertebrates animals that have a backbone and a spine. They have gills that permit them to take oxygen from the water. But have you ever wondered how vertebrate

发表于:2019-01-12 / 阅读(30) / 评论(0) 分类 2015年VOA慢速英语(七)月

Acanthostega 这种生物已经演化出前后肢,但每肢都有8趾。这种生物是从鱼类进化到两栖类的过渡产物。而且,它具有更多的鱼类特征,如有鳃、鳍和只能在水中起作用的感官。伦敦自然历史博

发表于:2019-02-24 / 阅读(46) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
abranin
abrasion of fracturing
aculodes levis
aethophyllinum
Alipur
ARFCN
arm-wrestle
ASCU
asw
atomic bombs
bazs
boron wool
candider
carpholite
cetylpyridinium
cherch
clock source
cloud-ready
co-editing
covalent bond band
darbyite
deaf aid
decanedioic acids
differential thermal analyzer
dithionites
drag pipe
ectatic scar
Elatostema yungshunense
electron-beam dose
end matching
enviromental lighting
erosional valley
etiocholanedione
evangelised
excess-of-loss reinsurance treaty
field-mapping
fluctuating current
forced vibration
four-coursest
gas liberation
insanest
inter-collegiate
just-say-no
kublai khans
lardoon
lollar
luminescent material
majority carrier contact
marketable title
matir
mockings
moderate inversion
modern font
murkinesses
myoneurasthenia
neo keynesian economics
nonboom
office-seekers
paragraph and line number
pattern of character
phenylbutazones
Pindaré, R.
plasticising
Pollenza
process meter
repeated midpoint formula
retarded release
return to reference recording
RF substitution method
right of paternity
salt-well
screen-bowl centrifuge
self - tapping screw
self heal
semitruss
short-straw
shorting-out engine
snake eye
spot and butt welding machine
springtowns
stark raving mad
subcutaneous xanthogranulomatosis
syntacticising
technomads
teeth dentine
teleglobe
time balls
tip stem borer
transistor maximum available power gain
treeswift
triamyl amine
two-stage quenching
tyramine test
universal algebraic family
urethrovesicolysis
valvula processus vermiformis
volcanic shoreline
welded casing
wheyey
wide-format
woven-screen storage
Yermolayevo