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1. Oxford American Dictionary

   colony collapse disorder

   • n.
     the sudden mass disappearance of the majority of worker bees in a colony. The causes of the phenomenon are unclear, though many possible causes or contributory factors have been proposed, such as diseases, pathogens, pesticides, and changes in habitat.

   • noun: colony collapse disorder

2. • 相關詞

   colony-stimulating factor

   • n.
     a substance secreted by bone marrow which promotes the growth and differentiation of stem cells ...

   Oxford Dictionary

   colony-stimulating factor

   • n.
     a substance secreted by bone marrow which promotes the growth and differentiation of stem cells ...

   Oxford American Dictionary

   Thirteen Colonies

   • ph.
     the British colonies that ratified the Declaration of Independence in 1776 and thereby became ...

   Oxford Dictionary

   Thirteen Colonies

   • ph.
     the British colonies that ratified the Declaration of Independence in 1776 and thereby became ...

   Oxford American Dictionary

   Amana Colonies

   • ph.
     a group of seven villages in east central Iowa. Settled by a German religious group, they are ...

   Oxford American Dictionary

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3. • 更多解釋

   colony collapse disorder

   • n.
     the sudden mass disappearance of the majority of worker bees in a colony. The causes of the ...

   Oxford Dictionary