The indigenous people on Yap Island in the Pacific Ocean used money called rai stones.
太平洋雅浦岛上的土著人用的货币叫做雅浦岛石币。
Rai stones
原声例句
经济 Crash Course
PBS趣味科普
Anyway, seriously, count your gold or your silver, or your Benjamins, or maybe even your rai stones if we have any fans from the Pacific island of Yap.
无论如何，说真的，数一数你的金子。或者你的银子，或者你的美元，或者甚至是你的雅浦岛石币，如果我们有来自太平洋雅浦岛的粉丝的话。
中文百科
雅浦岛石币
雅浦岛石币(Rai Stones)是原始货币之一，产自雅浦岛。雅浦岛是一个位于太平洋，人口只有约5000到6000人的小岛。岛上的土着人使用一种巨大石币作为流通货币。由于当地不出产金属，于是石头便成为当地重要的资源，并发展出以石头充当交易媒介的贸易模式。当地人称这种石币为费(Fei)。
英语百科
Rai stones 雅浦岛石币
Rai, or stone money (Yapese:raay), are large, circular stone disks carved out of limestone formed from aragonite and calcite crystals. Rai stones were quarried on several of the Micronesian islands, mainly Palau, but briefly on Guam as well, and transported for use as money to the island of Yap. They have been used in trade by the Yapese as a form of currency.
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