伊卡莱姆的ScalersTalk第四轮新概念朗读持续力训练Day172L38-2 20190328
练习材料:L38-2:ThefirstcalendarHistorianshavelongbeenpuzzledbydots,linesandsymbolswhichhavebeenengravedonwalls,bones,andtheivorytusksofmammoths.Thenomadswhomadethesemarkingslivedbyhuntingandfishingduringt