Microbiologists have been growing microbes on agar plates for nearly 150 years, but agar’s discovery dates back to a happy accident in a mid-17th-century kitchen. Legend has it that on a cold winter day, a Japanese innkeeper cooked tokoroten soup, a Chinese agar seaweed recipe known in Japan for centuries. After the meal, the innkeeper discarded the leftovers outside and noticed the next morning that the sun had turned the defrosting jelly into a porous mass. Intrigued, the innkeeper was said to have boiled the substance again, reconstituting the jelly. Since this discovery, agar has become a staple in many Japanese desserts, from yokan to anmitsu.
这个过程也很漫长，持续到了上幼儿园的时候，大概1年左右。这一步现在看来，还是非常有必要的，非常好的缓解了孩子的分离焦虑。
，更多细节参见旺商聊官方下载
print(f"Request failed ({attempt+1}/{self.config.max_retries}): {str(e)}")，详情可参考爱思助手下载最新版本
return f"Item(url={self.url}, title={self.title[:30]}...)"，推荐阅读夫子获取更多信息