backbone
名词 backbone:
a central cohesive source of support and stability
同义词:anchor, mainstay, keystone, linchpin, lynchpin
fortitude and determination
同义词:grit, guts, moxie, sand, gumption
the series of vertebrae forming the axis of the skeleton and protecting the spinal cord
同义词:spinal column, vertebral column, spine, back, rachis
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
同义词:spine
the part of a network that connects other networks together