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星期六的下午,我和爷爷去打乒乓球。不知道怎么回事,只打了一会儿,乒乓球突然凹进去了一块。我着急地问爷爷:“乒乓球凹进去了一块,怎么办?”爷爷不慌不忙地说:“别着急,我们先回家去吧。”我觉得很奇怪,乒乓球凹进去了干嘛要回家呢?回到家后,爷爷烧了开水,然后把“受伤”的乒乓球放进开水里。过了一会儿,爷爷把乒乓球捞上来,得意地对我说“:洋洋,你看!”我瞪大眼睛一看,只见刚才还凹进去的乒乓球竟然鼓了起来,圆圆的,一点事都没有,太神奇了!我脑海中立刻闪过一个疑问,为什么乒乓球在热水里能恢复原形呢?
On Saturday afternoon, I play table tennis with grandpa. Do not know how else, only for a while, table tennis suddenly indented one. I anxiously asked my grandfather: “table tennis concave into a piece, how to do?” Grandpa calmly said: “Do not worry, let’s go home go. ” I find it strange, ping pong concave Why do you want to go home? After returning home, my grandfather burned boiled water and put the “injured” ping-pong ball in boiling water. After a while, my grandfather snatched the ping-pong ball and proudly said to me: “Yeah, you see!” I stared with a big glimpse of the table tennis ball that I just recessed, , Nothing at all, amazing! My mind immediately flashed a question, why the table tennis in hot water to restore the prototype it?