High profit production segment: the manufacturing process from cow hides to wet-blue leather is the most profitable segment in leather industry.
环保部门的高效工作：在皮革业，从牛皮到蓝湿皮革的生产过程是最有利的阶段。
Cowherd sadly, according to the old cow said before she died, hides under the strip of leather.
牛郎伤心极了，他按照老牛临死前说的，藏起了剥下的牛皮。
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