自然产生的毒素，例如真菌毒素、海洋生物毒素、生氰苷和有毒蘑菇产生的毒素，定期引起严重中毒。
Naturally occurring toxins, such as mycotoxins, Marine biotoxins, cyanogenic glycosides and toxins occurring in poisonous mushrooms, periodically cause severe intoxications.
美国疾病控制中心警告既不要食用煮熟的，也不要食用生的大黄的叶子，因为其含有毒素(草酸)。
The CDC warns that neither cooked nor raw rhubarb leaves should be consumed, owing to the toxins (including oxalate) they contain.
事实上，你可能不知道在美国销售生杏仁是违法的——所有的杏仁都会经过加热处理以去掉毒素和细菌。
In fact, you may not know that it is now illegal in the USA to sell raw almonds -all almonds sold are now heat-treated to remove traces of poison and bacteria.
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