【脊椎动物】无颚脊椎动物

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(115) / 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(137) / 评论(0) 分类 英语听力文摘 English Digest

SCOTT SIMON, HOST: You might want to set aside your cornflakes for a moment now. Ed Yong writes in The Atlantic about a substance he says, quote, looks revolting but is also one of nature's more wondrous substances, unlike anything else that's been c

发表于:2019-03-04 / 阅读(181) / 评论(0) 分类 2019年NPR美国国家公共电台1月
学英语单词
absolute quota
act on behalf of
alumite wire
Apple Computer Inc.
appraisal price
arc-stream voltage
arge vulnerata
attack dogs
authoria
autoshaped
babes
basic level political organizatiion
Bobrowniki
breach of territorial sea
Buckingham potential
budget white paper
captivations
cassileth
climate conditions
co-option
collective coordinate
commodity of labour-power
condensate circulating pump
covibration
crystal mounting
desmocytes
DETAB (decision table)
disease of mucous gland
disilthianyl-
dolny pial
donor pretreatment
dotterels
dovetailling
EHC (electric hydraulic control)
elaphrines
emission response time
erythrocyte antibody
excitabilities
exhaust plumbing
false contact
fish meal drier
gene-targeting
genus Mangifera
got up and go
green compression test
handsies
Heterosoricinae
holorecordings
hydatid polyp
hydraulic efficiency plant
hypoploid
hypoyin
instrumented tracking and telemetry ship
isotope separation
jejunostomies
keyword system
Lemarquand
luteolol
mahoganizes
maximum amount limitations
mesoplastic
metal bath
Meyer's tests
morganatic
nail down
napkin dermatitis(diaper dermatitis)
nguyens
no charge
not give a snap
numerical invariant
nuss
optional vertical parity check
pig-woman
pivotbridge
playa
polarizing
polygon engine
public transport means
residual FM
ring baffle
sameissue
season's
seriol
shahrazad
Shope fibroma virus
snug fit
solar plexus
Stokes's liniment
stracke
straight-line frequency variable condenser
subport interconnection
sulfur recovery plant
technobabble
transverse shear testing
tyramine
UAAC
unfavorable geological condition
unhove
vertical router
wastepapers
wave torsional moment
zingerone