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Thirty minutes a day in the early elementary years and an hour in grades four, five, and six is standard, says Rosemond.

罗斯蒙德说，低年级的标准是每天30分钟，四、五、六年级的标准是每天1小时。

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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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When I give my standard 8 hour presentation training course to a group of executives, I start the day with a 75 minute PowerPoint presentation on how to use PowerPoint effectively.

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It does it on the very same little MiniDV tapes that other digital camcorders use for capturing standard-definition fare, yet manages to cram 60 minutes of high-def onto a standard one-hour cassette.

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Movies can be viewed up to 30 days after they are purchased and have the standard unreasonable 24-hour completion window once they are started.

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