first-name basis直呼其名的亲密关系
a first-name basis莫逆之交
on first-name terms亲密关系的
Default-First-Site-Name默认站点
to beon first-name terms关系密切直呼其名
on a first-name perspective直呼其名
on a first-name base直呼其名
on a first-name foundation直呼其名
on a first-name root直呼其名
N-COUNT（可数名词） Your first name is the first of the names that were given to you when you were born. 名
Her first name was Mary. I don't know what her surname was.
她的名字叫玛丽，我不知道她的姓是什么。