Oversee maintenance of efficient repeat guest history system.

对高效的常客客史档案系统维护实施监管。

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Oversee maintenance of efficient repeat guest history system;

对高效的常客客史档案系统维护实施监管；

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Although stack-based architectures are conceptually simple and efficient, they can introduce new inefficiencies, such as larger program sizes (because of stack maintenance).

尽管基于软件栈的架构在概念上很简单有效，它们会引入新的效率低下问题，比如较大的程序规模(因为要对软件栈进行维护)。

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Infrastructure facilitates the smooth, efficient and profitable maintenance of commerce.

FORBES: What the Superdome Blackout Says About American Competitiveness

Many utilities lack the depth of data needed to implement more cost-effective asset-management systems like condition-based monitoring and maintenance methods, which utilities in Europe and Asia are adopting to enhance the efficient use of capital and reduce operations and maintenance costs.

FORBES: Dark Grid: Electric Utilities Scramble to Get Smart