  It is shown that neutrino and antineutrino deep inelastic scattering of
unpolarized and polarized $\Lambda$ and $\bar{\Lambda}$ productions, can
provide a clean separation of unpolarized and polarized fragmentation functions
of a quark into a $\Lambda$, for both light-flavor quarks and antiquarks and
also for strange quarks. Combining with $\Lambda$ and $\bar{\Lambda}$
productions in polarized electron deep inelastic scattering, one can
systematically measure or check the various flavor and spin dependent
fragmentation functions. Such measurements can provide crucial tests of
different predictions concerning the spin structure of hadrons and the
quark-antiquark asymmetry of the nucleon sea.
