Using the heated stone, the researchers were able to produce realistic copies of silcrete tools.
用这种加热过的石头，研究人员得以造出砾岩工具的复制品。
Its bathroom has double vanities, a heated stone floor, an oval bathtub and a walk-in shower.
浴室设有两个梳妆台，铺有地暖石材地板，带有一个椭圆形浴缸和一个步入式淋浴间。
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。
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