The eraser in our lives is a very unusual thing, but it does work in the author's unusual.
The eraser appearance is very ordinary, there is a bar of soap, body hair is thick and hard, wrapped around a layer of rubber.
We in the class, the teacher wrote on the blackboard with painting, for a while, with the blackboard. The blackboard eraser will come in handy. With the "rustling" sound, soon the words on the blackboard was gone. The teacher can continue to teach us knowledge. Whenever difficulties, the teacher on the blackboard told us over and over again, each side without an eraser.
However, after a long time the eraser on board with the crack. Hair is short, and some are off. But it is still in the corner quietly a ?