My spine is fractured in two places.

...are the backbones of the American civilization.

It put iron in the country's backbone, gave them brave memory.

See, the body weight compresses the spinal discs, the bone joints and so on.

Vertebrates make up about 4 of all described animal species the rest are invertebrates, which lack backbones.

Let him jump so that he will fill the sacs along his backbone with air... ... and then he cannot go deep to die.

However in voice networks where everything is under the control of the network operator or telco, many of the largest carriers use H.323 as the protocol of choice in their core backbones.