The best available answer is that they were literally the earliest known works of art, practical tools transformed into captivating aesthetic objects, contemplated both for their elegant shape and their virtuoso craftsmanship.
已有的最佳答案是 它们就是 已知最早的艺术品， 从实用工具转变 成迷人的审美对象， 它们那优雅的形状 和精湛的工艺让人凝望深思。