The On-the-Spot Practice of Applying the Self-Made Air Curtain to Interdict the Air-Leaking of the Mines是什么意思_The On-the-Spot Practice of Applying the Self-Made Air Curtain to Interdict the Air-Leaking of the Mines在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句