Old Stone Age

• 旧石器时代

Old Stone Age的用法和样例：

例句

1. This stone axe is a relic of the Old Stone Age.
   这把石斧是旧石器时代的遗物。
2. The chipped stone tools of early Paleolithic Age in Central Asia should be also made by these Homo erectus.
   中亚旧石器时代早期的打制石器应该是这些直立人创造的。