| 单词 | stone tool |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔Chalcolithic〕Of or relating to the period of human culture preliminary to the Bronze Age, characterized by the use of copper and stone tools.青铜时代的：人类文明铜器时代开始时期的或与其相关的，其特征为使用铜器与石器美国传统〔MAKE〕Two million years ago our ancestors began to fashion stone tools. 二百万年前，我们的祖先开始制作石器。朗文写作活用〔Stone Age〕The earliest known period of human culture, characterized by the use of stone tools.石器时代：人类文化可知的最早的时期，以使用石器为特征美国传统〔biface〕A bifacial stone tool.两面石制工具美国传统〔core tool〕A stone tool consisting of a core that is flaked to produce a cutting edge or edges.岩蕊工具：石头的工具，由削成可以切东西棱状薄片的岩蕊所组成美国传统〔flake tool〕A stone tool consisting of a flake that is often modified by further chipping or flaking.薄石工具：经过进一步削磨处理的薄石工具美国传统〔turtleback〕Archaeology A stone tool with a convex side.【考古学】 龟甲形石斧：一边凸起的石制工具美国传统〔uniface〕A unifacial stone tool.单面石制工具美国传统〔unifacial〕Archaeology Flaked in such a way as to produce a cutting edge that is sharp on one side only. Used of a stone tool.【考古学】 单面石制工具的：切削以制作成切边的，仅有一边锋利。用于石制工具美国传统 |
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