On the design level, the goal of OO is to enable rapid and efficient design, development, and execution of applications that are flexible and extensible.

在设计层，OO的目标是能够进行快速而有效的设计、开发以及执行灵活且可扩展的应用程序。

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The incubation period of this disease, which can be as short as 3 days, necessitates rapid and efficient contact tracing, and this has been made a priority.

该病的潜伏期可短达三天，使得有必要迅速和有效开展接触者追踪，并且这已成为一项重点。

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It proved that injecting composite fly ash gel through pipeline network to the fire zone is a rapid and efficient fire-extinguishing technique and applicable to extinguish large area coal seam fire.

实践表明，复合胶体管网式防灭火技术是一种快速高效的防灭火技术，适应大面积煤层火灾的防治要求。

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Privatisation of electricity production, most notably in India, Thailand and Brazil, is causing a rapid installation of more efficient, and thus less polluting, power stations.

ECONOMIST: A cooling off period

Since then it has expanded profitably, helped by its government's pro-aviation policies such as the rapid expansion of its home airport and the provision of efficient air-traffic control.

ECONOMIST: Aviation

Rapid changes in society call educational systems into question: how relevant and efficient is education to prepare new generations to face present and future challenges?

UNESCO: Quality in educational policy: Research and foresight