This drift has been studied extensively in many animals and in biological activities ranging from the hatching of fruit fly eggs to wheel running by squirrels.

在许多动物中，以及在诸如果蝇卵的孵化乃至松鼠跑动的转轮这样的生物活动中，这种变化趋势一直受到广泛的研究。

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ObjectiveTo establish the techniques for recording the circadian wheel running activities in mice.

目的建立一种实时监测小鼠昼夜运动节律的技术。

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Usually, rapid public transport and large volume of traffic with electric energy power and by wheel running mode is referred to as rail traffic.

通常以电能为动力，采取轮轨运转方式的快速大运量公共交通总称为轨道交通。

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The open-wheel series is running a second, full-length race in the same weekend for the first time Sunday when Conway will start up front for the first time in his career.

NPR: Conway Wins 1st Of 2 Races At Detroit Grand Prix

Or, you can choose to keep working non-stop like a hamster running on a wheel that keeps going faster and faster.

CNN: Take your vacation, or die?

"Enough hamsters running on a wheel could displace a power plant, but no one's going to do it, because it's too expensive, " he says.

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