n.万花筒；千变万化

A kaleidoscope is an optical toy. 万花筒是一种光学玩具。

At sunset the sky became a kaleidoscope of colors. 夕阳西下时，天空的颜色千变万化。

He swiftly dismissed the kaleidoscope of memory, oppressed by the urgent need of the present. 眼前有急于要办的事逼迫着他，他一下子打消了记忆中的那些千变万化的情景。