cavern out

同根派生

The rock was caverned out to make a tunnel.
挖出岩石造隧道。
In this paper, we inquired into the treatment of highway slide slope and the tunnel cavern out on the land of Chongqing area.
重庆地区侏罗系地层滑坡的治理，首先在作好地质勘查工作后应建立地表排水系统、施抗滑桩群及挡土墙.;隧道洞口开挖采用"短进尺、爆破"。喷、及钢拱架、合超前小导管等初期支护是行之有效的方法之一。
It is absurd to go out in such terrible weather.
在这麽恶劣的天气里出去太荒唐。
He took out a fire insurance policy for his house.
他为自己的房子办理了一份火险保险单。
He's been in and out of prison for years.
他多年来屡次进出监狱。