A small stone artifact,probably an arrowhead,with a blunt straight edge and a sharpened,crescent - shaped back,especially characteristic of the Mesolithic Age.是什么意思_A small stone artifact,probably an arrowhead,with a blunt straight edge and a sharpened,crescent - shaped back,especially characteristic of the Mesolithic Age.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句