Noun:

1. a protein gelatin obtained by boiling e.g. skins and hoofs of cattle and horses

animallyadv.肉体上地animaln.动物；牲畜adj.动物的；野兽的animal pollution动物污染animal nutrition动物营养学Animal Mod- el动物模型animal welfarist动物权益保护主义者animal sociology动物社会学animal repellent兽用驱避剂animal husbinary畜牧学animal materials动物源性成分animal-wounded动物伤害animal droppings畜粪

1. They are mixed with animal glue and ox bile to make the lustre stay.
   它们与动物胶和牛胆汁混合可以保持光泽。