🇬🇧 en ja 🇯🇵

backbone noun

  /ˈbækˌboʊn/ , /ˈbækˌbəʊn/
  • The series of vertebrae, separated by disks, that encloses and protects the spinal cord, and runs down the middle of the back in vertebrate animals.
 背骨, 脊椎, 脊柱
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