knocking copy
noun/ˈnɒkɪŋ kɒpi/
/ˈnɑːkɪŋ kɑːpi/
[uncountable] (British English, informal)- advertising in which an opponent’s product is criticized
诋毁性广告（针对竞争对手） - Knocking copy is simply lazy journalism.
诋毁性报道不过是一种偷懒的新闻写作方式。
- Knocking copy is simply lazy journalism.