N-VOC (對高級官員的尊稱)閣下 You use expressions such as Your Excellency or His Excellency when you are addressing or referring to officials of very high rank, for example ambassadors or governors. (對高級官員的尊稱)閣下 [politeness]
I am reluctant to trust anyone totally, Your Excellency.
我不想完全相信任何人,閣下。
His excellency the President will be waiting for you in the hall.