摔不碎的蛋壳一天,我在厨房做饭时,突然一个空盒子从架子上滚落下来,正好掉在一半凸面向上的蛋壳上。我想蛋壳肯定碎了,不料它却完好无损。我非常疑惑,蛋壳不是很脆弱的吗?怎么这次连一条裂纹也没有呢?我决定要自己弄清楚。我做了个实验:把蛋壳凸面向上放在桌上,让铅笔对准蛋壳,在离 Unbreakable eggshell One day, when I was cooking in the kitchen, suddenly an empty box rolled down from the shelf, falling just half way up on the eggshell. I think the shell must be broken, but it is intact. I am very puzzled, the shell is not very fragile? How this time even a crack? I decided to make myself clear. I did an experiment: put the egg shell convex upward on the table, let the pencil at the egg shell, away from