动物区系消亡

Conservationists are overestimating the number of species that have been driven to extinction(消失), scientists have said. A study has found that a third of all mammal species declared extinct in the past few centuries have turned up alive and well

发表于:2019-01-07 / 阅读(39) / 评论(0) 分类 英语新闻

Neil: Hello and welcome to Six-Minute English from BBC Learning English, I'm Neil and with me today is Rosie. Rosie: Hi there. Neil: Well, today we're talking about men. Rosie: That sounds interesting. Neil: It is very interesting especially if you'r

发表于:2019-01-07 / 阅读(101) / 评论(0) 分类 六分钟英语

By Lisa Schlein Geneva 12 September 2007 A new report says the number of species threatened with extinction is escalating. The World Conservation Union, which has just released its Red List of Threatened Species, warns life on Earth will continue to

发表于:2019-01-13 / 阅读(86) / 评论(0) 分类 2007年VOA标准英语(九月)

Researchers have developed a new computer model that they say helps determine which mammals are headed for extinction as a result of human activity. Earth is undergoing its sixth mass extinction, threatening about a quarter of all mammal species, ac

发表于:2019-01-13 / 阅读(51) / 评论(0) 分类 VOA标准英语2009年(六月)

The Yangtze River is a major habitant for finless porpoise, an aquatic marine mammal close to dolphins. However due to increasing human activities the number of the animal has been declining in China over the years. Provinces along the Yangtze River

发表于:2019-01-19 / 阅读(67) / 评论(0) 分类 2018CRI中国国际广播电台

Cambodia is home to the largest population of sun bears left in the wild. As the worlds smallest bear species, they are now facing a high risk of extinction due to the twin threat of habitat loss and illegal hunting. Charities are working hard to sav

发表于:2019-02-04 / 阅读(43) / 评论(0) 分类 英语新闻视频
学英语单词
acoustic amplitude reflection coefficient
Araras
armoured automobile
average childbearing age
babyishly
banda
bergerets
between-decks
bismuth permanganate
Borden, Gail
bornetella sphaerica
box-rooms
caraven
catchpool
centrifugal cream separator
circumferential bead
cladistic
Classification Certificate for Machinery
colormetry
contact surface
counts towards
creation design
Culex quinguefasciatus
deaux
Descending Channel
diesel electric power station
dominica pass.
Dubois's method
dunbird
earth's outer-core
essential fructosuria
establishment charge
Estero Point
Eumeces skiltonianus
extract phase
fire in stems
frictional action
fuel sheath
fullscales
gasoscopes
high harmonic
hourly quota of handling
inspection test procedure
intervaries
john henries
king oscillator
kleinite
launch loops
lineic electric current
logotype
long-pendulum experiment
longitudinal video tape recorder
machanical flex
Maeve
marine fan
mash-ups
mesaortitis
midnight chow
Muharram
multiregion reflector
negative feedback modulation
non-Mendelian gene
one-track minds
operation service
oppose oneself to sth
palette-knife
perimicropylar
petrolisthes tomentosus
Piecki
plen-
poultryman
preblocked
preomnor
Primary Care Trust
punkling
rack server
rapid shutdown
relapseth
remote site recovery
repulsive potential energy surface
resedew
samarium-cobalt magnet
sarcoscypha fusispora
setting hen
shoguns
Silvana
soil invertebrate
spider-wheel rake
sub-grade modulus
sudoral typhoid fever
supersedal
surface irradiation
suturae occipitomastoidea
tadpolelike
tangentto helix
tidswell
tri-p-xylylborine
tricresolamine
uncivilized behavior
univest
vire
white feathers