短语
历史抽象法
method of historical abstraction
历史形象
historical image
好象历历在目
and not so long ago
小象露露历险记
Rolo to the Rescue
历史想象
historical imagination
阅读历史对象
reading of historical subjects
遍历抽象动力系统
[数]
ergodic abstract dynamical system
推历观象
observe the stars and calculate calendar