  I mainly describe neutrino masses and oscillations in the gauge model with
$SO(3)_{F}$ lepton flavor symmetry and with two Higgs triplets. It is shown how
the maximal mixing between $\nu_{\mu}$ and $\nu_{\tau}$ neutrinos comes out
naturally after spontaneous breaking of the symmetry. The nearly two-flavor
mixing scenario is resulted naturally from an approximate permutation symmetry
between the two Higgs triplets. The hierarchy between the neutrino mass-squared
differences, which is needed for reconciling both solar and atmospheric
neutrino data, leads to an almost maximal mixing between $\nu_{e}$ and
$\nu_{\mu}$ neutrinos. Thus the model favors the intriguing bi-maximal mixing
scenario.The three Majorana neutrino masses are allowed to be nearly degenerate
and large enough to play a significant cosmological role. The model can also
lead to interesting phenomena on lepton-flavor violations via the $SO(3)_{F}$
gauge interactions.
