这样可以提供必要的冗余和安全性。
许多安全和情报机关重复作业，造成冗余和浪费。
Many security and intelligence agencies do the same work, creating redundancy and waste.
冗余技术是提高系统可靠性与安全性的重要途径。
Redundancy technology is an important method of improving reliability and security in system.
冗余技术是提高系统可靠性与安全性的重要途径。
Redundancy technology is an important method of improving reliability and security in system.
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