这四只牛是实物小缩影，或者说是小模型，一次性手工造模成型，材料是一小块尼罗河粘土。
These cows are miniatures - small models, hand-moulded out of a single lump of Nile river clay.
此单元组包括在铸造行业使用手工或机器铸造模具和核心，熔融金属并操作融炉的工人。
This unit group includes workers who make foundry moulds and cores by hand or machine, cast molten metal, and operate furnaces in the foundry industry.
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