资料来源
https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.mightymrs.com%2Feasy-homemade-ice-cream-without-a-machine%2F&psig=AOvVaw2T9oyKD1sUYFRPE0waMvW7&ust=1694046312775000&source=images&cd=vfe&opi=89978449&ved=0CA4QjRxqFwoTCPiWkcPclIEDFQAAAAAdAAAAABAO