21.  Naturally, a custom bicycle is more expensive than a standard model.

22.  Regularly switching back to a laptop or standard model would be a major nuisance.

23.  Schweig said standard models of strain accumulation based on plate motions should not be used in New Madrid.

24.  That was important, he said, because it was an independent test of the standard model.

25.  That confirmation allowed physicists to proceed confidently with developing what is known as the standard model theory of matter.

26.  The current standard model does not predict the masses of neutrinos, but its equations are simpler if neutrinos have no mass.

27.  The device, which consists of two arc-shaped segments, comes in five standard models.

28.  The other two trains are standard models, virtually off the shelf.

29.  The moderately priced houses are standard Toll models more modestly outfitted, Hausle said.

30.  The nonappearance of a key particle would signal the end of large parts of the standard model.