It took me as long as three hours to climb the mountain.

我用了长达三个小时的时间才爬上那座山。

youdao

Over and over and over again, we would make these journeys, and sometimes they would last as long as three hours at a stretch.

我绕来绕去，一次再次，不停地绕着圈子，有时一口气要推三个小时之久，我也数不清究竟绕了多少圈。

youdao

Both men credit exercise—pushups, situps, chinups, jogging, and other calisthenics for as long as two or three hours every day—as vital to coping with the inactivity of imprisonment. Fecteau commented

这两人都认为用锻炼来对付监禁期间的无所作为非常重要：每天做两三个小时的俯卧撑，仰卧起坐，引体向上，慢跑，还有其他健身操。

youdao

He added firefighters at large incidents had to be relieved every three hours as there is a limit to how long they can work at such intensity.

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Two or three hours were needed to put the costume on, and as long to get it off again.

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