Leather is by ossein type piece the material of poriferous fiber shape that poriferous matrix makes record.
皮革是由骨胶原类型片状多孔基质构成的多孔纤维状物质。
Leather is by ossein type piece the material of poriferous fiber shape that poriferous matrix makes record.
皮革是由骨胶原类型片状多孔基质构成的多孔纤维状物质。
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