  We have used the event generator LUCIAE to analyse NA35 data of the $\bar p$
and $\bar{\Lambda}$ yields, the ratio $\bar{\Lambda}/\bar p$, and the
transverse mass distributions of $\bar p$ and $\bar{\Lambda}$ in pp and central
sulphur-nucleus collisions at 200A GeV. The NA35 data could be reproduced
reasonably if one assumes that the s quark pair suppression factor and concerns
in nucleus-nucleus collisions are larger than the nucleon-nucleon collision. It
seems to indicate that NA35 data might imply the reduction of strangeness
suppression in ultrarelativistic nucleus-nucleus collisions comparing to the
nucleon-nucleon collision at the same energy. However, the ratio
$\bar{\Lambda}/\bar p$ approaching to unity in AA collisions comparing to the
pp collision does not necessarily mean a flavor symmetry since hadronic
rescattering plays a role as well.
