资料来源：
https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.foodnetwork.com%2Frecipes%2Fclassic-cake-doughnuts-13556852&psig=AOvVaw1-5oZniV5SpLgozJAa9HwN&ust=1694046933897000&source=images&cd=vfe&opi=89978449&ved=0CA4QjRxqFwoTCPiK8_HelIEDFQAAAAAdAAAAABAS