  A container picture is proposed for understanding cluster dynamics where the
clusters make nonlocalized motion occupying the lowest orbit of the cluster
mean-field potential characterized by the size parameter $``B"$ in the THSR
(Tohsaki-Horiuchi-Schuck-R\"{o}pke) wave function. The nonlocalized cluster
aspects of the inversion-doublet bands in $^{20}$Ne which have been considered
as a typical manifestation of localized clustering are discussed. So far
unexplained puzzling features of the THSR wave function, namely that after
angular-momentum projection for two cluster systems the prolate THSR wave
function is almost 100$\%$ equivalent to an oblate THSR wave function is
clarified. It is shown that the true intrinsic two-cluster THSR configuration
is nonetheless prolate. The proposal of the container picture is based on the
fact that typical cluster systems, 2$\alpha$, 3$\alpha$, and $\alpha$+$^{16}$O,
are all well described by a single THSR wave function. It will be shown for the
case of linear-chain states with two and three $\alpha$-clusters as well as for
the $\alpha$+$^{16}$O system that localization is entirely of kinematical
origin, that is, due to the inter-cluster Pauli repulsion. It is concluded that
this feature is general for nuclear cluster states.
