The respiratory system plays an important role in maintaining our internal environment at the proper level of oxygen, by bringing the right amount in.

呼吸系统的重要性在于,通过向体内输入适量的氧气,维持人体内环境中的氧平衡

耶鲁公开课 - 生物医学工程探索课程节选

I don't think it very relevant whether the death comes about because you withdraw life support, like a ventilator, or because you actually decide to end that child's life by giving the child a lethal injection.

我觉得这也与造成死亡的原因无关,无论是通过撤走维持生命的仪器，比如呼吸机，还是通过药物注射,结束孩子的生命。

普林斯顿公开课 - 人性课程节选