Translation

• (old) to report to one's master

Examples

• 知道一门语言是一回事，教这门语言又是另一回事。
  To know a language is one thing, and to teach it is another.
• 管理一间公司和拥有一间公司是不能相提并论的两回事。
  Management of a company is different from ownership of a company.