火绒,(作引火用的)朽木;火绒状质地;
They would collect a fungus called touchwood from tree bark and boil it for several days in urine before pounding it into something akin to felt.
维京人会从树皮上收集一种叫做火绒的真菌,并在尿液中将火绒沸煮几天,再将其捶打至与原来相似的物质。
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