Once I completed the Cube and demonstrated it to my students, I realized it was nearly impossible to put down.

Once I completed the Cube and demonstrated it to my students, I realized it was nearly impossible to put down.

当我完成了这个立方体，并向我的学生展示它时，我意识到它几乎是不可能放下的。

-- Erno Rubik 厄尔诺·鲁比克