grindstones的翻译，读音
英/ ˈɡraɪndstəʊn /
美/ ˈɡraɪndstoʊn /
释义：
n.磨石
词态
复数grindstones例句
The markings on the recovered tools suggest that they were used like grindstones and pestles for processing grains. 从复原的工具的印记上可以看出它们被用作来像磨谷粒的磨石、捣杵。