RobertHsu 正在
16 years ago
過去我常不知到為何病人的頭髮砷含量多太高 現在終於明白
那是食物中的污染嗎
RobertHsu
16 years ago
Yes! Oil is probaly contaminated by 砷
RobertHsu
16 years ago
Most of time, the contaminant is from water
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