Typically, though, a mission-critical application does not rely on public data sources because of concerns about availability and data validity.

但是，考虑到数据的可用性和有效性，任务关键型应用程序一般都不依赖于公共数据源。

youdao

For example, an agency that provides food will need to know about availability of transport and fuel, road conditions, etc.

例如，一个提供食品的机构要了解交通、燃料和路况等。

youdao

Availability of this freeze-dried vaccine made it, then, possible to think about vaccinating people all over the world.

冻干疫苗的应用能使医护人员,考虑向全世界人民接种疫苗

耶鲁公开课 - 生物医学工程探索课程节选

And, as the London Olympics overlap with the Fringe for at least one week, there were legitimate concerns about availability.

BBC: Future of Edinburgh's festivals brought to book

"Companies often hold unnecessary inventories as a safety measure because they really don't have an idea about availability at the supplier's end, " explains Chris De Bruin, Metique's chief operating officer.

FORBES: Beneficent Billionaire?

If you're already running Windows 98 SE or Windows Me on a system with a 933-MHz or faster processor and a large-cache hard disk, Microsoft recommends you check with your PC vendor about availability of the patch.

CNN: Data loss threatens fast Windows systems