國內要買美國航空發動機一定會買波音飛機.高端醫療分析儀器不買美國檢測不出.要求美國開放科技交流簽證說明很多問題..

來源: 5181 於 2026-05-17 16:04:33 [舊帖] [給我悄悄話] 本文已被閱讀：次

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