The night shift should have been safely down the mine long ago.

　　上夜班的礦工應該早就安全地到達井下了。

　　Doctors should be able to decide who they can safely let out of hospital early.

　　醫生應該有權決定誰可以安全地提早出院。

　　The first part of the plan has been safely accomplished.

　　計劃的第一部分已順利完成。

　　Realization of Network Machine Voting System and Study of Its Safeness

　　網絡機器投票系統實現和安全性研究

　　Liveness and safeness are important behavioral properties of net systems.

　　活性和有界性是網系統的重要行為特性。

　　The designed system adopted redundant structure, and increased the safeness and the reliability of the system.

　　在系統硬件配置中，采用冗余結構，提高系統的安全性和可靠性。