(=indigenous species)本地种

Researchers Find Bright Side to Some Invasive Species Non-native species present threats to natural environments across the world by pushing out native organisms. Their presence can seriously damage ecosystems that provide clean water, food and other

发表于:2018-12-16 / 阅读(45) / 评论(0) 分类 2018年VOA慢速英语(十)月

You shouldn't judge a book by its cover, and you shouldn't judge a species by place of its origin, so say ecologists in the commentary in the Journal Nature. They argued that conservation should access organisms based on their impact on the local env

发表于:2019-01-08 / 阅读(37) / 评论(0) 分类 Scientific American(六)月

Native Bees May Help Save Crops 本地蜜蜂可能帮助拯救农作物 BELTSVILLE, MARYLAND In June, U.S. President Barack Obama called for a federal strategy to promote the health of bees and other pollinators that have been declining. The honeybee

发表于:2019-01-14 / 阅读(47) / 评论(0) 分类 VOA标准英语2014年(八月)

Tasmanian Devils, pygmy-possums and native parrots are just some of Australia's threatened species. But thanks to a successful breeding season, one animal sanctuary is optimistic for the future survival of these creatures. Our reporter Li Dong has th

发表于:2019-01-19 / 阅读(49) / 评论(0) 分类 世界各地新闻集锦

Forget Nessie: there's another insidious creature living in the waters of Scotland. The story starts in the streams and lakes of the northwestern United States, where North American signal crayfish are a familiar sight. Turn over a rock and you may w

发表于:2019-02-07 / 阅读(21) / 评论(0) 分类 英语新闻

Last week a woman called Marie Smith Jones died. She was 89 years old and she lived in Alaska in North America. Marie was the last person alive to speak a language called Eyak. Eyak is, or was, one of the native North American languages. Linguists ha

发表于:2019-02-19 / 阅读(42) / 评论(0) 分类 听播客学英语
学英语单词
aileron droop
alicyclic amine
allowable load capacity
altitude test chamber
analysis of dynamic system behaviour
automatic data logging
automatic feedback control system
banana-shrub
barrier system (bs)
blade connection
bobbin winder frame
broin
Byers, Mt.
cabin aeroplane
Chākuha
claen space clause
class actinozoas
cognac flavour
concentric curriculum
Cotal planetary transmission with magnetic clutch
delighting in
delivery control mechanism
Edgewater Heights
elastic mounting of superstructures
electric cooking stove
equipment for flue curing
eroticized
finishing roll forging
gaards
gamma detector
Gaxandho
genus Mesocricetus
gets wind of
glemanserin
Hovius
in-sack drier platform
interferencecomparator
invariance of power
juxes
landlord class
locally arcwise connected topological space
manroots
mid-face
morbidit
mostly sunny
mount-carstensz
multicenter arch
muniments of title
N-meshes
object definition
oncopeltus quadriguttatus
one-another
paisan
pearl-necklace lightning
penned-in
persely
pFastBac
philipse
Pinellia peltata
postfovea
preet
primary power plant
propitiates
pupy
radiation initiated polymerization
rattle over
removal astringency by treatment with carbon dioxide
resistive medium
retractable guide
Salpiglossis sinuata
same purpose as lime
short-distance traffic
shunting operation plan
slayer rules
soil assessment
sound receptor
spectral displacement
spheric polar coordinates
subject-centered
submental fistula
succesisve route
suitly
superinsulation
superrecursive
surface-volume ratio
surquetil
table spoonful
tcxture
teutenage
thermal ratio
thermopile detectors
tubae uterinae isthmus
unburthen
unit bibliography
van arkel-de boer process
veratrifolia
viviparous fish
wax plucking
weak separability
Wendlandia brevituba
wodajo
yard arm