Examples range from contamination of the food or water supply, to high levels of air or noise pollution, a chemical accident, a disease outbreak or a natural disaster.
这方面例子的范围包括从食物或水供应的污染，到空气或噪音高度污染、化学事故、疾病暴发或自然灾害。
Although microbial contamination of food continues to account for the majority of instances of illness, consumers still have a high level of concern about chemical residues in food.
尽管细菌引起的食物污染仍然是造成疾病的主要原因，消费者们仍然非常担心食物中的化学残留。
To ensure all food served to guests and employees are free of microbiological, chemical and physical contamination, and all work areas conform to minimum requirements set by local health authorities.
确保为客人和员工提供的所有食物均没有任何微生物、化学和物理污染，并且所有工作区域符合地方卫生当局的最低要求。
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