胆固醇：胆固醇是一种有效地抗氧化剂，它能能防止细胞膜上的自由基的危害，胆固醇只能在动物性食品中获得。
Cholesterol: a potent antioxidant that protects against free radicals in cell membranes. Found only in animal foods.
生物性危险：指食品中不应该出现任何意外的生物有机体或人为添加的生物有机体，不能危害人类的健康。
Biological risk: refers to the food should not occur in any unexpected organism or add artificial biological organisms, can not harm human health.
食品中来自微生物性危害的危险性密切关系到人类的健康。
The risk caused by microbiological hazards in food is very concerned to human health.
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