英语语法分析

Vitamin B12 is also called cobalamin because it contains the metal cobalt.

维生素b12也被称为维生素b12，因为它含有的金属钴。

Cobalamin is widely used in medicine and food industry, which is produced mainly by fermentation.

钴胺素广泛应用于医药和食品行业，目前主要由微生物发酵生产。

Aloe contains ten vitamins, including an uncommon, plant derived source of B12, also know as cobalamin.

芦荟含有十种维生素，包括一种稀罕的、植物中提炼出来的B12维生素源头，叫做氰钴胺素。