The research about degenerative frozen soil for ages at the Xiaoxinganling region and frozen soil test at the Wuying - Tangwanghe section of the Yijia highway是什麼意思_The research about degenerative frozen soil for ages at the Xiaoxinganling region and frozen soil test at the Wuying - Tangwanghe section of the Yijia highway在線翻譯_英語_讀音_用法_例句