看了一下wiki，有人说海象牙贸易被非洲象牙冲击，造成经济影响，也是维京人放弃格林兰的原因之一

来源: viewfinder 于 2026-01-16 16:48:21 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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