is it possible to make clothes in marvelous designer and then import it to blender for making a animation with the clothes on a character?
Yes it is. But then the material will have to be set to a soft body and use the Blender cloth simulation.
There is a way to use the MD simulation, but it is long and not really useful if you have a long animation.
To get it to work properly, you have to export your blender model and import it into MD so that the clothes fit properly. Then export it from MD and import it back into Blender.