Long,longagopeoplemadefiresfromlightening(闪电).Butthe...
问题详情： Long,longagopeoplemadefiresfromlightening(闪电).Buttheyhadtokeepthefireburning,fortheycouldn'tstartitagainiftherewasnolightening.Later,theyfoundouthittingtwopiecesofstonetogethercouldma...