呃，我們可能智慧不夠，明明還倆玻璃珠呢，Bakelite 已經是塑料了，早期的塑料是 Celluloid。

來源: 宗闋於 2014-03-16 20:26:28 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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