The key question is whether the savings in licensing fees for proprietary products outweigh the additional costs in manpower to integrate and operate the free alternative.

关键问题在于免去专利软件许可证所省下的钱，是否高于整合及使用它们的免费替代品所带来的额外人力资源成本。

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Being able to operate autonomously in lunar orbit will be a key factor in Orion being able to support longer missions.

猎户在月球轨道自动运行是他能够担当长期使命的一个关键因素。

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The Center plays a key role in the Bio-Fuels Industry for Workforce Training to assist in the growing need for qualified personnel to operate and manage bio-fuel refineries across the country.

该中心在生物燃料工业的劳动力培训上扮演着关键的角色，协助全国范围内生物燃料提炼厂对合格的操作和管理人员的增长需求。

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Now, a coalition of civic advocates and political leaders is trying to get things moving to overhaul Penn Station by latching on to what they say is a key development: The 50-year-old city permit to operate Madison Square Garden expired in January.

WSJ: Plans languish for overhaul of NYC's Penn Station