Sulfatocobalamin
硫酸钴胺
🗣️ 情景例句
It was a wonderful meal, Mrs. Stewart.
真是一顿精美的晚餐 Stewart太太。
I'm very much obliged to you.
非常感谢您。
Oh good. Come in. I'm his son.
好吧，请进。我是他的儿子。