The rescuers tunnelled their way ( in ) to the pot - holers.救援人员挖地道通向那些探察洞穴的人.They tunnelled along under the walls and up into the woods beyond.他们在围墙下面挖地道通向远处的树林.The rebels tunnelled out of a maximum security jail...叛乱者挖...
They signed a confidentiality agreement.他们签署了一份保守机密的协议。There are some goals of Certified E - mail Protocol : confidentiality non - repudiation and fairness.挂号 电子邮件 协议需要具备保密性、不可否认性及公平性.Confidentiality: Ensuring unauthoriz...