dust-methane-air-mixture英'dʌstm'iːθeɪn'eərm'ɪkstʃər美'dʌstm'iːθeɪn'eərm'ɪkstʃər 基本例句 煤尘¹⁰⁰ Miners are finished extracting coal here, and the sides of the tunnel have been sprayed with quicklime to suppress explosive coal dust.矿工们已经完成了这里的煤炭开采,坑道两壁都喷上了生石灰以防止煤尘爆炸。