我糊涂了。石膏是碱性，柠檬是酸性，咋都能做豆腐呢？

来源: 桃花好运于 2020-03-10 09:44:13 [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.