Like the life span, the metabolic rate has for different organisms a fixed mathematical relationship to the bodymass.
就像寿命一样，不同生物的新陈代谢率与身体质量有着固定的数学关系。
2
To obtain empirical data regarding the energy costs of singing, Thomas examined the relationship between song rate and overnight changes in bodymass 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。
3
The increased metabolic cost of possessing higher bodymass contributes to the increased overnight mass loss.