Celluloid had been commercially available for decades as a substitute for tortoise-shell, horn, bone and other materials.
几十年来，赛璐璐一直在商业上充当龟甲、角、骨和其他材料的代用品。
"Infant formula" means a milk-based or soy-based powder, concentrated liquid or ready -to-feed substitute for human breast milk that is intended for infant consumption and is commercially available.
“婴幼儿配方乳”指在商铺中可购买的供婴幼儿食用的奶粉、大豆粉或浓缩液体，或即饮的母乳替代品。
"Infant formula" means a milk-based or soy-based powder, concentrated liquid or ready -to-feed substitute for human breast milk that is intended for infant consumption and is commercially available.
“婴幼儿配方乳”指在商铺中可购买的供婴幼儿食用的奶粉、大豆粉或浓缩液体，或即饮的母乳替代品。
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