That the company was struggling financially became common knowledge within the industry.

common 的意思是"普通的、常见的"，在这里表示"普遍存在的"。 knowledge 的意思是"知识、认知"，指人们知道或了解的信息。 common knowledge 指"众所周知的事实"或"常识"，表示某个信息在特定群体中已被广泛知晓。