tunnelingn.掘进；开挖隧道；遂道工程；隧穿动词tunnel的现在分词形式.tunneln.隧道；地道；洞穴v.挖地道；挖隧道Tunnel lined built隧道衬砌tunnel borer-car隧道钻孔车tunnelling machine巷道掘进机tunnel enlargement隧道扩大tunnel portal area隧道洞口段tunneling junction隧道结tunnel controlling隧道监控Tunneling dynamics隧道动力学tunneling diseases健康诊断tunnel restoration隧道修复技术