  Various QCD tests using recent results from fixed-target dimuon production
experiments at Fermilab are discussed. We emphasize that clear evidence for
scaling-violation in the Drell-Yan process remains to be established. Further
experimental and theoretical work are needed to understand the polarization of
the Drell-Yan pairs. The nuclear medium effects for dilepton productions are
also discussed. In particular, the energy-loss of partons traversing nuclear
medium is deduced from the Drell-Yan nuclear dependence.
