英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
rsquo查看　rsquo　在百度字典中的解释百度英翻中〔查看〕
rsquo查看　rsquo　在Google字典中的解释Google英翻中〔查看〕
rsquo查看　rsquo　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • 2 out of 3 North American bird species face extinction. Here . . .
    As the climate crisis worsens, so does pressure on wildlife The number of birds in North America has declined by 3 billion in the last 50 years Brooke Bateman, director of climate science at the
  • Ducks were once a conservation bright spot. Now theyre . . .
    There are some 2,000 bird species in North America A third of the species examined are rated as high or moderate concern for conservation due to declining numbers, habitat loss or other threats These birds “need urgent conservation attention,” said Amanda Rodewald, a study co-author from Cornell, adding that bird survey trends also reveal
  • Ecosystem consequences of bird declines - PMC
    Based on the criteria used by the IUCN , 21% of 9,916 historic bird species (all species that survived past A D 1500) are extinction-prone, a category that includes species that are extinct (1 3%), threatened with extinction in the next 10–100 years (12%), and close to qualifying or likely to qualify for a threatened category in the near
  • 2022 U. S. State of the Birds Report Reveals Widespread Losses . . .
    Findings included in the 2022 State of the Birds Report: More than half of U S bird species are declining U S grassland birds are among the fastest declining with a 34 percent loss since 1970 Waterbirds and ducks in the U S have increased by 18 percent and 34 percent, respectively, during the same period
  • State of the World’s Birds 2022 paints most concerning . . .
    One in eight species (or 1,409 species in total) are now threatened with extinction Nearly three billion birds are estimated to have been lost since 1970 in North America alone, and a further 600 million have been lost in the European Union since 1980, an area five times smaller
  • Humans might have driven 1,500 bird species to extinction . . .
    The model suggested that around 1,300–1,500 bird species — about 12% of the total worldwide — have become extinct since the Late Pleistocene (which was an epoch roughly 126,000–12,000
  • Three billion North American birds have vanished since 1970 . . .
    The familiar birds that flock by the thousands in suburbs were not exempt "There's an erosion of the numbers of common birds," Rosenberg says His team determined that 19 common species have each lost more than 50 million birds since 1970 Twelve groups, including sparrows, warblers, finches, and blackbirds, were particularly hard hit





中文字典-英文字典  2005-2009