◊ People who are on a first-name basis (US) or on first-name terms (Brit) know each other well and address each other by their first names.以名字相称某人(表关系密切)
He was on a first-name basis with his boss.他和老板关系密切,直呼其名。
They know most of the officials on a first-name basis.他们和绝大多数官员都关系密切。
— sometimes used figuratively有时用作比喻
She was on a first-name basis with adversity. [=she experienced a lot of adversity]她命途多舛。