摘要: Chewing gum is a type of gum made for chewing, and dates back at least 5,000 years. Modern chewing gum was originally made of chicle [糖胶树胶], a natural 阅读全文
posted @ 2022-05-23 21:57 华容道专家 阅读(144) 评论(0) 推荐(0)