囚犯们在监狱墙下挖地道逃跑了.The convicts undermined the prison wall and escaped.救援人员挖地道通向那些探察洞穴的人.The rescuers tunnelled their way ( in ) to the pot - holers.他们在围墙下面挖地道通向远处的树林.They tunnelled along under the walls and up into the wood...