  For the degenerate viscous and heat conductive compressible fluids, the
momentum equations and the energy equation are degenerate both in the time
evolution and spatial dissipation when vacuum appears, and then the physical
entropy S behaves singularly, which make it challenging to study the
corresponding well-posedness of regular solutions with high order regularities
of S near the vacuum. In this paper, for the physically important case that the
coefficients of viscosities and heat conductivity depend on the absolute
temperature \theta in a power law of Chapman-Enskog, we identify a class of
initial data admitting a local-in-time regular solution with far field vacuum
to the Cauchy problem of the 3-D full CNS, and such a solution possesses the
uniformly high order regularities for S near the vacuum. The key idea here is
to study the vacuum problem in terms of the mass density \rho, velocity u and S
instead of (\rho, u,\theta), which makes it possible to compare the orders of
the degeneracy of the time evolution and the spatial dissipations near the
vacuum in terms of the powers of \rho. However, for heat conductive fluids,
both a degenerate spatial dissipation and a source term related to \triangle
\rho^{\gamma-1}, will appear in the time evolution equation for S, which makes
it formidable to study the propagation of regularities of S. Fortunately, based
on some elaborate analysis of the intrinsic degenerate-singular structures of
the 3-D full CNS, we can choose proper weights to control the behaviors of
(\rho, u,S) by introducing an enlarged reformulated system, which includes a
singular parabolic system for u, and one degenerate-singular parabolic equation
for S. Then one can carry out a series of weighted energy estimates carefully
designed for this reformulated system, which provides an effective propagation
mechanism for S's high order regularities near the vacuum.
