资料来源：
https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.bluecoldref.com%2Fblogs%2Fwhy-correct-freezing-temperature-is-require-to-store-ice-cream&psig=AOvVaw10IXF8VAIckvut71Z538pw&ust=1693968996357000&source=images&cd=vfe&opi=89978449&ved=0CA4QjRxqFwoTCMCQ7c-8koEDFQAAAAAdAAAAABAn