Just as raising temperature can change the properties of iron and other metals, early humans heated stone to make it easier to flake.
正如给铁和其他金属加温以改变其属性，早期人类通过给石头加温，使之更容易被制作成石片。
One, two, three ... three times at the other ... so eight specific actions by him, knocking it with another stone, to take off a flake, and to leave this almost straight line, which is a sharp edge.
所以他不多不少恰恰打了八次，利用其他石头来打磨它，敲掉一小薄片，留下这边面几乎呈现直线，边缘相当之锋利。
There is a rockery is flake stone assembled like flake stone, like a knife standing there.
有种假山是使用片状石材组装而成，像鳞片石，犹如一把把刀立在那里。
应用推荐