chargé d'affaires
noun [ C ] uk/ˌʃɑː.ʒeɪ dæfˈeər/ us/ˌʃɑːr.ʒeɪ dæfˈer/ chargés d'affaires uk/ˌʃɑː.ʒeɪ dæfˈeər/ us/ˌʃɑːr.ʒeɪ dæfˈer/
临时代办（大使不在期间代行其职责）;代办（派驻在未设大使国家的外交官）
a person who represents the leader of his or her government, either temporarily while the ambassador is away, or permanently in a country where there is no ambassador
the Belgian chargé d'affaires/the chargé d'affaires for Belgium 比利时代办