They receive a fixed rate, which is typically about $825 for a standard four-hour vocal session.

他们的收费是固定的，一般来说，一场标准的四小时演讲收费约为825美元。

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Instead, they receive a fixed rate, which is typically about $825 for a standard four-hour vocal session.

相反，他们会得到固定的费用，通常一节标准四小时声乐课的费用是825美元。

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It took the Amazon S3 development team one hour to verify the outage, and they didn't respond again until the problem was fixed a couple hours after that.

亚马逊s3开发团队花了一个小时去查证宕机事件，并且他们直到问题被修复数小时之后才再次回应。

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Statistics from 2001 to 2005 show that a hour spent riding in a helicopter was about 40% more likely to result in an accident than an hour spent in a fixed-wing aircraft.

FORBES: 10 Essential Checks Before You Step Into A Helicopter

After an hour of malfunctioning equipment and fixed grins it was all over.

BBC: Confessions of a Womad DJ

Bottom line: Money should be a fixed measure of value, just as an hour has 60 minutes, a foot has 12 inches and a pound has 16 ounces.

FORBES: Fact and Comment