an advocate who presents a person (as for an award or a degree or an introduction etc.) 同义词:sponsor,
someone who presents a message of some sort (as a petition or an address or a check or a memorial etc.)
百科解释
A presenter, or host (hostess if female), is a person or organization responsible for the running of a public event. A museum or university, for example, may be the presenter or host of an exhibit.