Decommissioning those mainframes and replacing them with new and ported applications is an incredibly costly and risky undertaking.
如果让这些大型机直接退役并替换为新的移植应用程序，成本将非常高，而且风险也很大。
Decommissioning those mainframes and replacing them with new and ported applications is an incredibly costly and risky undertaking.
如果让这些大型机直接退役并替换为新的移植应用程序，成本将非常高，而且风险也很大。
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