on the books

adj. 已经注册登记(已入会员名单)

例句与用法：

He swore at the boy who dropped ink on the book.

他对那把墨水倒翻在书上的孩子臭骂了一顿。

Mr Jack is on the books of the Football Association.

杰克逊先生是足球协会的会员。