Peter wields the keys of the kingdom of heaven and can open and shut the doors of personal salvation, just as he can open and shut the doors of the church.

彼得挥舞着通往天堂极乐的钥匙,他可以任意打开关闭，凡人可借此得救的大门，正如他可以任意操控通往教会的大门一样。

耶鲁公开课 - 弥尔顿课程节选

Their doors are open and people come and go everyday, but they're not really open for business.

他们敞开大门，人们每天进进出出，但是他们并没有真正在做事。

耶鲁公开课 - 金融市场课程节选