论文部分内容阅读
材料和用具热水,食盐,小罐子, 汤匙,钉子,细绳子,铅笔。我的问题人们是怎样从海水中取盐的呢?
Materials and utensils Hot water, salt, jars, spoons, nails, thin ropes, pencils. My question is how people take salt from the sea?