用清水过一遍，用一块湿布盖在绿豆的上面，再同样放在热炕头上，就这样每天都重复地换水，哪天不能少于3次，过了2天，小胖子孕妇就分娩了，绿豆被撑破了绿色的肚皮，露出了白嫩的小芽，像一条小小的尾巴，慢慢地，小尾巴长大了，豆瓣也开了，象一个张开嘴的小动物要东西吃的样子，这个时候淘洗就更重要了，一定得用清水，不能有油污，不然将影响生长。
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