One person may go from Phase 4 to Phase 5 and then back to Phase 2 again; that is why there is no easy way to determine how long a change will take to implement.
有些人可能已从第四阶段进入第五阶段，但一下子又从新跳入第二阶段；这就是为什么计算一场变革需要花多长时间是很难的。
One person may go from Phase 4 to Phase 5 and then back to Phase 2 again; that is why there is no easy way to determine how long a change will take to implement.
有些人可能已从第四阶段进入第五阶段，但一下子又从新跳入第二阶段；这就是为什么计算一场变革需要花多长时间是很难的。
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