How can an all-powerful, good God allow so much evil to exist and even go unpunished?

怎么可能，一个万能的，善良的上帝会允许邪恶的存在，甚至不受到惩罚呢？

耶鲁公开课 - 旧约导论课程节选

In the presence of this ligand, this molecule, it's open, it allows transport of this ion, when the ligand is gone it doesn't.

配体存在的情况下通道才打开,允许这些离子穿过,配体离开后,这些离子就不能通过了

耶鲁公开课 - 生物医学工程探索课程节选