In Griffith's General Relativity there is the following line:
An accelerated particle has no inertial frame in which it is always at rest. However, there is an inertial frame which momentarily has the same velocity as the particle, but which a moment later is of course no longer comoving with it. This frame is the momentarily comoving reference frame (MCRF), and is an important concept. (Actually, there are an infinity of MCRFs for a given accelerated particle at a given event; they all have the same velocity, but their spatial axes are obtained from one another by rotations).
I am not able to understand the last statement.
How is it possible for an accelerated particle to have an infinity of MCRFs at a given event?