Yeah sure, wear trainers with those pedals, but it'll be uncomfortable and not very efficient. Those pedals are designed to be worn with clipless shoes, if they are indeed campy pedals they will look something like this:

Not the ideal platform for a standard trainer.
They could also be similar to this:

Which again have similar problems.
If you're not that bothered about wasting half a rotation then just sell those and get a set of something like this:

If you are interested in using that half a rotation that's wasted, but don't want clipless shoes then try something like this: