To obtain empirical data regarding the energy costs of singing, Thomas examined the relationship between song rate and overnight changes in body mass of male nightingales.

为了获得有关唱歌能量消耗的经验数据，托马斯研究了鸣声率与雄性夜莺在夜间的体重变化之间的关系。

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Birds store energy as subcutaneous fat deposits or "body reserves"; changes in these reserves can be reliably estimated by measuring changes in body mass.

鸟类以皮下脂肪沉积或“身体储备”的形式储存能量；通过测量体重的变化，可以可靠地估计这些储备的变化。

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One of the student inventors, Camila Rupcich, says the device changes the energy released from the plant into low-level power to charge phones.

其中一名学生发明者卡米拉·鲁比奇表示，该设备将植物释放的能量转化为低能级电流，为手机充电。

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He says when it comes to saving energy and money, big changes start with small steps like turning out the lights.

VOA: special.2010.03.22

And it's always going to come down to calculating the appropriate free energy, and how it changes in the process.

这总是涉及到计算,适当的自由能，以及这些自由能在过程中如何变化。

麻省理工公开课 - 热力学与动力学课程节选

And we can actually better visualize this if we plot how that energy changes as a function of internuclear distance.

而我们就能更清楚地看到这些，如果我们画出,能量随核间距的变化曲线。

麻省理工公开课 - 化学原理课程节选

Think about the remarkable changes in energy and technology in the last 100 years.

FORBES: Hey Newt: Get Off Of The Couch!

Last year's council meeting in Edinburgh was hosted by Mr Salmond and discussed population changes and energy issues.

BBC: Morgan hosts British-Irish summit

It claimed that thousands of jobs could be created and early deaths avoided through changes to energy use in homes and transport.

BBC: Climate measures 'bring benefits'