extruding concrete tunnel lining

例句：

1. 1.The machine extruded the metal intoa tube.
   这台机器将金属挤压成管状。
2. 2. The oil was forced outof the pipe by the pressure.
   油被压力从管道中挤出。
3. 3. Thecarpenter extruded wood to make a table.
   木匠挤压木头制作桌子。