backbones ['bækboʊnz]

例句:

• Why do hummingbirds and gorillas both have backbones?
  为什么蜂鸟和大猩猩都有脊骨?
  
• Simply adding bandwidth to the Internet backbones is not an answer.
  只是简单的在互联网骨架上增加带宽是应付不了的.
  
• They are vertebrates, that is, animals that have backbones.
  它们是脊椎动物, 即有脊骨的动物.
  
• It's the rhythm of routers and sub-net masks, of mainframes and backbones.
  来自BBC
• Crops then sprang up in rows; animals without backbones stood up and then fell over.
  来自SA
• But critics have countered that findings from turtle embryology hinted that the backbones and ribs morphed to make a shell.
  来自SA