gōng / rén / xiān / zhì / zuò / shā / xíng / zài / tōng / guò / fān / shā / wán / chéng / jīn / shǔ / líng / jiàn / de / zhù / zào

工人先制作砂型，再通过翻砂完成金属零件的铸造。

The workers first make a sand mold and then cast the metal parts using sand casting.