It will never be known how and when this numeration ability developed, but it is certain that numeration was well developed by the time humans had formed even semi-permanent settlements.
我们永远也不会知道这种计算能力是何时、如何发展起来的,但可以肯定的是,在人类形成半永久定居点的时候,这种计数法已经发展得很好了。
The Cravens Peak protects unique red sandy dune fields gibber plains semi-permanent waterholes and Coolabah woodlands.
克雷文斯山峰区保留着独一无二的红色沙丘地、三棱石平原、半固定水坑和澳洲胶树林。
The Cravens Peak protects unique red sandy dune fields, gibber plains, semi-permanent waterholes and Coolabah woodlands.
克雷文斯山峰区保留着独一无二的红色沙丘地、三棱石平原、半固定水坑和澳洲胶树林。
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