The way we have standard units like meters or degrees, early accounting used units like cowry shells or shekels of grain.
我们使用米或度等标准单位的方式,早期会计使用贝壳或谢克尔谷物等单位。
英语百科
Cowry
(重定向自Cowry shell)
Cowry or cowrie, plural cowries, is the common name for a group of small to large sea snails, marine gastropod molluscs in the family Cypraeidae, the cowries. The word cowry is also often used to refer only to the shells of these snails, which overall are often shaped more or less like an egg, except that they are rather flat on the underside.