一个绝对的素食主义者的饮食也是排斥动物胶的，它是从动物的骨骼和组织中提取出来的。
A vegan diet also excludes gelatin, which is derived from the bones and tissues of animals.
胶骨中等长度，可以察觉到骨骼比腿部细腻一些，略微倾斜。
Pasterns of moderate length, perceptibly finer in bone than the leg, and slightly slanting.
动物胶：通过煮沸处理动物皮和骨骼而获得的硬而脆的褐色固体。
Glue: Hard brittle brownish solid made by boiling hides and bones.
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