  We show that, in $\nu_\mu N\to \mu^-\Lambda X$ at the NOMAD energies, it is
impossible to separate the products of the fragmentation of the struck quark
from those of the nucleon remnant. The latter has a large contribution even in
the current fragmentation region and has to be taken into account in
calculating $\Lambda$ polarization using different pictures. Based on this, we
make a rough estimation for the longitudinal $\Lambda$ polarization in
$\nu_{\mu} N \to \mu^- \Lambda X$ at the NOMAD energies. A comparison with the
data is given and predictions for $\nu_\mu N\to\mu^-\Sigma^+X$ are presented.
