大白菜除了水分外，能有多少维生素、矿物质呢?后来我才知道自己对大白菜营养价值的极其无知。
B-Thing I-Thing I-Thing O O B-Thing I-Thing O O O O O O B-Physical I-Physical I-Physical O B-Physical I-Physical I-Physical O O B-Time I-Time B-Person O O O B-Person I-Person O B-Thing I-Thing I-Thing B-Abstract I-Abstract I-Abstract I-Abstract O O O O O O