1972年就開始引進了，適當的引進當然是好事。

來源: 欣國學於 2020-10-17 14:10:18 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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1972年就開始引進了， 適當的引進當然是好事。