Ferrichrysin
正铁5,7-二羟基黄酮
🗣️ 情景例句
I must say the products in Shanghai have improved very much in the past ten years.
我得承认上海的产品这十年来进步了很多。
The restaurant doesn't open until seven forty-five.
饭馆要到七点四十五分才开门。
It was upon this principle that the first instruments were made,
据这一原理，制造出了最初的地震仪器，