silica不就是二氧化矽（沙子）嗎，作為藥物和食品添加劑用得很多。咋成重金屬了

來源: viewfinder 於 2021-01-07 03:47:02 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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