| For example, looking at the stone tools, large ground stone axes, stone spear-heads, inserted stone blades, half-moon shaped stone tools, pointed stone tools, shaft abraders, and stone arrowheads were invented during this period. |
例えば、石器群では、大型の磨製石斧、石槍、植刃、断面が三角形の錐、半月系の石器、有形尖頭器、矢柄研磨器、石鏃などが、この期に出現する。 |