backbone怎么读

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backbone英语什么意思：脊骨，脊椎；分水岭；主要山脉；主要成分；中枢；中坚，骨干；主力；刚毅，骨气；书脊 (the backbone of a defence 防御主力。 to the backbone 完完全全，纯粹，十足，彻头彻尾。 an Englishman to the backbone 道地的英国人)。