As a counter-example, if machines are left to deteriorate then some of them break down immediately, whereas others function perfectly for a very long time.

BBC: Viewpoint: Just what is middle age?

It seems that some people break down vitamin C into oxalate at higher rates than others, which may explain the link to formation of kidney stones.

FORBES: Move up http://i.forbesimg.com t Move down

But as part of integrating them and others so that we don't have those with the title of Awakening and others under title of militias -- and this is the policy we want to use to break down barriers.

CNN: Transcript: Prime Minister Nuri al-Maliki on Iraq

The Pereda family, like others in the area, exerts itself mightily to build a literal pyramid of salt, only to break it down into sacks of salt for sale.

NEWYORKER: Araya