food net食物网foodn.食物；食品Food for animals or birds.饲料或鸟食food and beverage processers食品和饮料加工工人Food-grade phosphoric acid食品磷酸food science and engineering食品科学与工程专业food health security problem食品卫生安全问题Food of one particular brand要点定位理解。由题干中Food safety guarantee system食品安全保障体系Food and packaging machinery食品和包装机械Food is essential to life.食物对生命是必不可少的。food-to-take-away shop熟食店