  We propose and discuss a theoretical scheme to speed up Zeno dynamic passage
by an external acceleration Hamiltonian. This scheme is a flexible and
experimentally feasible acceleration because the acceleration Hamiltonian does
not adhere rigidly to an invariant relationship, whereas it can be a more
general form $\sum u_{j}(t)H_{cj}$. Here $H_{cj}$ can be arbitrarily selected
without any limitation, and therefore one can always construct an acceleration
Hamiltonian by only using realizable $H_{cj}$. Applying our scheme, we finally
design an experimentally feasible Hamiltonian as an example to speed up an
entanglement preparation passage.
