“广告业务的”可以翻译为“advertising-related” 或 “pertaining to advertising business” 。
“advertising-related” 更简洁，常用于描述与广告业务有直接关联的事物，例如 “advertising-related activities”（广告业务相关活动） 。
“pertaining to advertising business” 表述更正式、完整，直接点明与广告业务相关，例如 “This report focuses on issues pertaining to advertising business.”（这份报告聚焦于广告业务相关的问题。 ）