The soil contains evidence of the influence of man since the Stone age, bose explains, and this age has already been treated as an independent geological era for a long time.
It was only at that moment the researchers began to suspect that the stone had been heat-treated.
直到那一刻研究人员才开始怀疑这块石头被热处理过。
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Natural stone remains a popular and stable retaining wall material, while redwood, pressure treated wood and used rail ties can add rustic charm to your dream landscape project.