Ex·cel·len·cy
noun/ˈeksələnsi/
/ˈeksələnsi/
His/Her/Your Excellency
(plural Excellencies)
- a title used when talking to or about somebody who has a very important official position, especially an ambassador
（对身居要职的人，尤其是大使的尊称）阁下 - Good evening, your Excellency.
晚上好，阁下。 - their Excellencies the French and Spanish Ambassadors
法国和西班牙大使阁下
- Good evening, your Excellency.