但拿来说一个族裔，是不是可以说有六亿瘪谷子，就是满把的瘪谷子呢？这点与药物试验有本质的区别吧？

来源: 酒绿春浓于 2020-06-24 11:11:15 [旧帖] [给我悄悄话] 本文已被阅读：次

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