We need to have conditions internally that are relatively constant in terms of temperature, and pH, and chemical composition in order for us to thrive.

我们需要体内的环境参数保持相对稳定,这些环境参数包括,温度,pH值,以及化学组成,这样人才能茁壮成长

耶鲁公开课 - 生物医学工程探索课程节选