多物种成熟生态系统

Exhibit Highlights Butterfly's Beauty, Diversity, Value to Ecosystem Flying Canvases They are gentle, colorful creatures that move with grace and flair. And in a warm and humid enclosure at the Smithsonians National Museum of Natural History in Washi

发表于:2018-12-08 / 阅读(87) / 评论(0) 分类 VOA标准英语2013年(三月)

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(66) / 评论(0) 分类 2018年VOA慢速英语(十)月

1.vivisection 活体解剖 2.perform. experiments on animals 在动物身上做试验 3.test animals 用于实验的动物 4.be subjected to experiments 被迫接受试验 5.animal rights 动物权利 6.clinical research 临床研究 7.cruel 残忍的

发表于:2018-12-18 / 阅读(97) / 评论(0) 分类 雅思英语

雅思写作环保类重点词汇 1.vivisection活体解剖 2.perform. experiments on animals在动物身上做试验 3.test animals用于实验的动物 4.be subjected to experiments被迫接受试验 5.animal rights动物权利 6.clinical research临

发表于:2018-12-19 / 阅读(78) / 评论(0) 分类 雅思英语

This is good honey. It's very good honey. Yeah, it's very good honey. And this is the honey from the Refuday Tegmoden. Tegmoden,... is not very far, is it? Emnh, now the distance between the hive that produce this and the hive that produce that, how

发表于:2018-12-27 / 阅读(63) / 评论(0) 分类 探索与发现2014年

It's one of the last wilderness areas, in Africa, last great wilderness areas in the world, and you have a very large intact savannah ecosystem which is adjacent to the largest wetland in Africa. So there are a lot of superlatives here in southern Su

发表于:2019-01-07 / 阅读(114) / 评论(0) 分类 cnn2009年(十二)月

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Since so many species in a food web are interconnected, the demise of a one can mean extinction for several others that depend on it for food. Thanks to things like

发表于:2019-01-08 / 阅读(102) / 评论(0) 分类 Scientific American(八)月

By Zulima Palacio Kauai, Hawaii 18 June 2007 The Hawaiian archipelago represents the most isolated group of islands in the world. Plants and animals that are common to many people elsewhere only made it to these islands in the last few hundred years

发表于:2019-01-11 / 阅读(97) / 评论(0) 分类 2007年VOA标准英语(六月)

Fewer Creatures in Future Oceans Could Provide Less Food 海洋生物大量减少在未来只能提供更少的食物 Warming oceans will cause big changes in the biodiversity of sea life. That is a finding from the largest study ever of marine plant

发表于:2019-01-12 / 阅读(46) / 评论(0) 分类 2015年VOA慢速英语(九)月

More Surprises from the Deep Sea Researchers hired to study part of the deep sea floor of the Pacific Ocean found a surprising number of new animal species. Scientists at the University of Hawaii at Manoa studied a 900-square-kilometer area in the ea

发表于:2019-01-12 / 阅读(90) / 评论(0) 分类 2016年VOA慢速英语(八)月

Asian Carp now outnumber native fish in many areas of the United States and their expansion particularly threatens the fragile ecosystems of the Great Lakes. In an effort to control algae growth, catfish farmers in the southern United States introduc

发表于:2019-01-13 / 阅读(97) / 评论(0) 分类 VOA标准英语2010年(七)月

Kenya's ocean waters are home to five out of the world's eight species of turtles. All are classified as either endangered or critically endangered, and are threatened by poaching, fishing nets, development and pollution. The conservation groups Wata

发表于:2019-01-13 / 阅读(82) / 评论(0) 分类 VOA标准英语2010年(七)月

Species Loss Compromises Earths Vital Systems Scientists have long thought that diverse ecosystems like forests, lakes and streams are especially good at removing pollutants that human activities put into the environment. A new study in the journal N

发表于:2019-01-14 / 阅读(52) / 评论(0) 分类 VOA标准英语2011年(四月)

Science and technology 科学技术 Palaeontology 古生物学 Remember the tooth 齿状物所记 A link is made in an ancient ecosystem 古生态系统的一环 WHO ate whom in the food chains of the past is rarely clear. 过去的食物链中谁吃谁

发表于:2019-01-26 / 阅读(57) / 评论(0) 分类 经济学人科技系列

Have you ever said, I know it like the back of my hand? Well, how well do you know the back of your hand? Or the back of your knee? Or behind your ears? Probably not as well as scientists at the National Institutes of Health who just completed a sur

发表于:2019-01-30 / 阅读(113) / 评论(0) 分类 60秒科学

Researchers working for the World Wildlife Fund have warned that the effects of climate change pose a serious threat to rare species of wildlife discovered within the past year in Southeast Asia, including a fanged frog and a leopard-striped gecko. A

发表于:2019-02-05 / 阅读(104) / 评论(0) 分类 英语杂谈

1. Why that two-timing! 为什么那么不专情。 2. Don't let it get you down. There are plenty of fish in the sea。 别让这件事影响你的情绪。天涯何处无芳草。 3. Are you cheating on me? Because I've been hearing some rumors。 你

发表于:2019-02-07 / 阅读(83) / 评论(0) 分类 英语新闻

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(49) / 评论(0) 分类 英语新闻

动物保护类 1.vivisection 活体解剖 2.perform. experiments on animals 在动物身上做试验 3.test animals 用于实验的动物 4.be subjected to experiments 被迫接受试验 5.animal rights 动物权利 6.clinical research 临床研究

发表于:2019-02-09 / 阅读(93) / 评论(0) 分类 雅思英语

Coincident with concerns about the accelerating loss of species and habitats has been a growing appreciation of the importance of biological diversity,the number of species in a particular ecosystem,to the health of the Earth and human well-being

发表于:2019-02-19 / 阅读(126) / 评论(0) 分类 托福英语
学英语单词
a three-box reversal criterion
acephaetmet
American dogwood
anticheirotonus
artificial intellegence
associative operation
avella
books of facts
brigous
calif.s
catalytic CO detector
Chernyavka
Claremont Colleges
competitive bidding system
consomniate
CWPD
day-mare
diacetyldibydromorphine
digit storage relay
direness
emergency electric system
European Mediterranean province
extensionist
farnsworth image dissector
Fischbach bei Nürnberg
fold-over distortion
FORTRAN fault processor
fuzzy proposition
gcsf
getkey
grachan
home point
housing ladder
hypophosphatemic
impact fuze
industrial geography
inner-hearing
insane asylums
iodising
jadad
kiche
laugh at somebody
lead-base babbitt
lehs
loosely coupled processor
Maclaurin's theorem
madolyn
Maitland, L.
Mambookie
mangoing
marsay
master profile template
methane vent
michelia compressa compressa
middle order
mine manager
mis-delivery
Moore's infectious leukemia
mouse-tooth forcepss
multi-config
neesiella longiseta steph
netware requester
niassa
no-officia
nonsaturated logic
optic indicatrix
ovthecae
pityriasis albas
PND
Populus glauca
proofre
purblindly
random signal vibration projector
refreeze
region of convection
retentive magnetism
sampled colour sine-wave signal
service bridge
side part forming machine
sight-vocabulary
single way slab
singular operator
spich
stage discharge relation
statistical expert system
strong-acid ion exchange resin
tolerableness
trash recycling
trial docket
turn out to be
ultrasonic delay line memory
uncaring
unfetter
uranium-bearing material
veliferid
venae gastroepiploica dextra
vereshchagin
vesical dysfunction
wedging effect
working of metals
xdr-tb
zenstomin