La ciudad es un laberinto, y cada calle es un hilo en la madeja de la memoria.

音乐可以改变世界，因为它可以改变人的思想。

The past is always changing. It is not fixed. The past is not stable.

The computer is the ultimate polluter: its feces are indistinguish- able from the food it produces.

统计学的最终目标是从数据中提取信息。