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back bone的英文翻译是什么意思，词典释义与在线翻译：
英英释义
名词 backbone:
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a central cohesive source of support and stability
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fortitude and determination
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the series of vertebrae forming the axis of the skeleton and protecting the spinal cord
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the part of a book's cover that encloses the inner side of the book's pages and that faces outward when the book is shelved
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the part of a network that connects other networks together
