“铁杵磨成针”讲的是我国唐代大诗人李白的故事。李白小时候在学堂读书,颇感枯燥,决定逃学。路上,他遇见一位老奶奶在路边一块石头上磨铁杵,感到很好奇,就问老奶奶磨铁杵做什么用。老奶奶告诉他,她要把那根铁杵磨成缝衣服用的针。李白大为吃惊,问:“这么粗的铁杵什么时候才能 “Iron pestle grinding into needles” tells the story of the great poet Li Bai in the Tang Dynasty. Li Bai, a child studying in the school, quite boring, decided to truancy. On the way, he met an old lady on the roadside stone rubbed iron pestle, was very curious, asked Granny grinding iron pestle what to do. The grandmother told him that she should grind that iron pestle into a needle for sewing. Li Bai was greatly surprised and asked: "When such a thick iron pestle can