Customers define at which price per hour they are willing to pay for Spot instances, and as long as the Spot price remains below the customer's threshold, the Spot instances execute.

客户制定出他们愿意为Spot实例每小时支付多少钱，只要Spot的价格仍然低于客户给出的阈值，Spot实例就会一直运行。

youdao

Use the VTI oxygen Analyzer for "spot checks" in instances when an oxygen level alarm is not necessary.

不需要含氧量警报时，使用VTI氧气分析器进行抽查。

youdao

The other option is to rent a server using Spot Instances where we would utilize the resources only when capacity is most affordable, like in the middle of the night.

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The FBI document says the information would be used to help it to predict the likely actions of "bad actors", detect instances of people deliberately misleading law enforcement officers and spot the vulnerabilities of suspect groups.

BBC: FBI plans social network map alert mash-up application