The Coal Mine Pares off the Plank Transports the Machine Using a Heap of Coals the Protection Equips of Research to Manufacture Applied是什么意思_The Coal Mine Pares off the Plank Transports the Machine Using a Heap of Coals the Protection Equips of Research to Manufacture Applied在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句