换个名，金刚石不就理解呢。钻头，砂轮都有。放心，老船长说了：中国能垄断的元素，美国都有两种替代选择。

来源: TreeNewBee 于 2025-10-15 01:14:34 [旧帖] [给我悄悄话] 本文已被阅读：次

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