它是由兽皮做的。
Animal skins were used for covers.
动物的皮毛被当作被子。
Animal skins were dried and also used to write on.
动物的皮干掉后也可以写字。
Alaska's wealth in oil, natural gas,trees,fish and animal skins makes its purchase one of the greatest deals any country ever made for territory.
VOA: special.2010.02.11
The stiff,crackling noises of frozen animal skins told him that the chiefs tent was being torn down.
VOA: special.2010.02.27
They stopped on the Oregon coast to trade for animal skins.
VOA: special.2009.02.19
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