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
Pfahl查看　Pfahl　在百度字典中的解释百度英翻中〔查看〕
Pfahl查看　Pfahl　在Google字典中的解释Google英翻中〔查看〕
Pfahl查看　Pfahl　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:


  • Confronting America’s Wildlife Extinction Crisis - Center for . . .
    One in five animal and plant species in the United States—nearly 1,300 total species—is at risk of extinction Among mammals, the populations of more than two-thirds of all imperiled species
  • Nature Risk Rising: Why the Crisis Engulfing Nature Matters . . .
    One million species are at risk of extinction in the coming decades – a rate tens to hundreds of times higher than the average over the past 10 million years The World Economic Forum’s 2020 Global Risks Report ranks biodiversity loss and ecosystem collapse as one of the top five threats humanity will face in the next ten years
  • Extinction | Official Trailer [HD] | Netflix - YouTube
    A father has a recurring dream of losing his family His nightmare turns into reality when the planet is invaded by a force bent on destruction Now, fightin
  • Number of Living Species in Australia and the World - DCCEEW
    (i e described) species in the world suggest a figure of around 1 75 million (Hawksworth and Kalin-Arroyo 1995), varying from about 1 5 million to 1 8 million (Tangley 1997) About 18,000 new species are being described each year (16,969 in 2006 and 18,516 in 2007—the last two years for which figures are available) About 75% of the new species
  • Save the planet: 6 ways you can prevent animal extinction
    Sadly, there are over 37,400 species of animals today which run the risk of extinction Endangered birds alone make up 14% of this expansive list There are three different stages of an animal being endangered: vulnerable, endangered, and critically endangered Those who are vulnerable face a high risk of becoming extinct, and endangered
  • An upper bound for the background rate of human extinction
    Using fossil record data, median extinction rates for mammals have been estimated as high as 1 8 extinctions per million species years (E MSY) 2, or equivalently μ = 1 8 × 10 −6
  • DeepDive: estimating global biodiversity patterns . . . - Nature
    A mass extinction is simulated by setting the extinction probability for that time bin to \({\mu }_{ME} \sim {{{{{\mathcal{U}}}}}[0 8,0 95]\), consistent with empirical estimations (e g 90%





中文字典-英文字典  2005-2009