To prepare raw hamburger patties for freezing, separate them with small plastic coffee-can tops, stack them in a pile, place them in a plastic bag, and seal.
要保存生的汉堡肉饼，可以用小的塑料咖啡罐的盖子分隔，将它们摞成一摞，装进塑料袋里，封好口。
A traceability system is in place, including tracing back from the final product through quality control data and batch records to the raw materials used and the suppliers?
现场是否有可追溯体系，包括通过质量控制数据和批次记录，由最终产品追溯到所有的原材料和供应商？
Aggression by foreign powers in China has gradually become a semi-colonial semi-feudal society as dumping goods and predatory powers of the place of raw materials.
列强的侵略使中国开始逐步沦为半殖民地半封建社会，成为列强倾销商品和掠夺原料的场所。
Aggression by foreign powers in China has gradually become a semi-colonial semi-feudal society as dumping goods and predatory powers of the place of raw materials.
列强的侵略使中国开始逐步沦为半殖民地半封建社会，成为列强倾销商品和掠夺原料的场所。
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