chamber excavating峒室: chamber开凿: dig; cut; cutting峒室: chamber◇峒室爆破 chamber blasting; 峒室开凿 chamber excavating; 峒室支护 chamber support开凿: dig; cut; cutting 开凿隧道 cut a tunnel; 开凿运河 dig a canal开凿机: excavator下载手机词典可随时随地查词查翻译
