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)。
the part of a network that connects other networks together; "the backbone is the part of a communication network that carries the heaviest traffic"
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; "the title and author were printed on the spine of the book" 同义词：spine,
fortitude and determination; "he didn''t have the guts to try it" 同义词：grit, guts, moxie, sand, gumption,
the series of vertebrae forming the axis of the skeleton and protecting the spinal cord; "the fall broke his back" 同义词：spinal column, vertebral column, spine, back, rachis,
a central cohesive source of support and stability; "faith is his anchor"; "the keystone of campaign reform was the ban on soft money"; "he is the linchpin of this firm" 同义词：anchor, mainstay, keystone, linchpin, lynchpin,
例句与用法
1.
After all, we're the backbone of the country . 我们毕竟是国家的栋梁。
2.
The backbone is an articulate structure . 脊椎骨是一种关节相连的结构。
3.
His sister had the backbone to stand up to him . 他姐姐有勇气和他对着干。
4.
The sweat started out on winston's backbone . 温斯顿的脊梁上开始渗出冷汗。
5.
They are the backbone of the factory . 他们是这个厂的顶梁柱。
6.
The sweat broke out on his backbone . 背上出了一身冷汗。
7.
Carbon atoms provide the backbone of living matter . 碳原子提供了生活物质的主链。
8.
Carbon atoms provide the backbone of living matter . 碳原子提供了生命物质的骨架。
9.
He is british to the backbone . 他是地地道道的英国人。
10.
Why do hummingbirds and gorillas both have backbones ? 为什么蜂鸟和大猩猩都有脊骨？
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