成年男性用英语怎么说

"Adult male" in English is 英语中的成年男性.
It comes from English word "Adult" means 成年人，and "male" means 男性。 put them together meaning a grown up man

Examples:

He is an adult male. 他是一个成年男性。
The group of adult males were discussing politics. 这群成年男性正在讨论政治。
The study only included data from adult males. 这项研究只包括了成年男性的数据。