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keystone resources

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网络释义专业释义

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另外,相对高差达1100多米(基部大西沟口海拔1700米)的光头山可能是某些脊椎动物和昆虫的关键资源(keystone resources),因为这些物种需要沿不同的海拔梯度(elevation gradients)在不同的植物群落间移动,连续不断地获得食物。

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·2,447,543篇论文数据,部分数据来源于NoteExpress

权威例句

  • The Keystone pipeline would contribute the similarly booming resources of Canada to America, more than a million barrels a day, more than is imported from Saudi Arabia or Venezuela.

    FORBES: As The Economy Recesses, Obama's Global Warming Delusions Are Truly Cruel

  • We can create tens of thousands of new American jobs by encouraging the development of America's vast energy resources and supporting truly shovel-ready projects like the Keystone XL pipeline, which would create an estimated 20, 000 jobs, according to TransCanada, while boosting domestic energy production.

    CNN: Obama, where is the recovery?

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