When a snail crossed the road, he was run over by a turtle. Regaining consciousness in the emergency room, he was asked what caused the accident.

　　"I really can't remember," the snail replied. "You see, it all happened so fast."

蜗牛的故事

　　一个蜗牛过马路，被一个乌龟从身上碾过。在急救室里它恢复了知觉，有的人问它事故是怎样发生的。

　　“我记不起来了，”蜗牛回答说，“你瞧，一切发生得都太快了。”