  The OPERA collabotation has reported evidence of superluminal neutrinos with
a mean energy 17.5 GeV ranging up to 50 GeV. However, the superluminal
interpretation of the OPERA results has been recently refuted theoretically by
Cherenkov-like radiation. We discuss a loophole of this argument from the
kinematical viewpoint and find it possible to avoid the Cherenkov-like
radiation of the OPERA neutrinos. The key idea of our argument is to admit the
fact that the neutrinos travel faster than the observed speed of light while
they do slower than the true speed of light in vacuum so strictly speaking they
are not superluminal but subluminal. Moreover, we present a model where these
two velocities of light can be constructed by taking account of influences from
dark matters near the earth.
