3岁孩子能理解等号，但是无法理解变量，估计。。。

来源: 两女宝妈于 2022-07-14 20:23:46 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.