It is suggested that sunscreen be applied every one to two hours in a sunny day.

建议在晴朗天气里每隔一到两个小时涂抹防晒霜。

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The conference broke for a recess, but the 10-minute break stretched to two hours.

会议暂时休会，但10分钟的休息延长到了两小时。

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He spends up to two hours making each portrait.

他花了长达两个小时来制作每幅肖像。

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Dr.Brook says just one to two hours of breathing automobile exhaust in traffic can be deadly.

VOA: standard.2010.08.04

They are very aggressive to be type-A people who just simply made two extra hours out of their 24-hour day.

他们渴望成为上等人,甚至希望每天,能多过两个小时。

麻省理工公开课 - 媒体、教育、市场课程节选

And if you are prepared to stand up for about two and a half to three hours to watch a play,

而且你要准备好了站上大约两个半小时到三个小时，去看一场戏剧，

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The charity has said volunteer are only needed for up to two hours a week.

BBC: Somer Valley Food Bank in volunteers plea

The Secure Digital (SD) memory card will hold up to two hours of video on 64 megabytes.

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Tomorrow obviously is the normal meeting that generally takes about an hour and a half to two hours.

WHITEHOUSE: Press Briefing