中国机械工业联合会：今年前两个月机械工业增加值同比保持增长

This formal news-style pattern means “to learn from a source that…” or “to be informed by…”. It is commonly used in reports to introduce where the information comes from. The source is placed after 从, and 获悉 introduces the reported information.

This is a common formal four-character structure meaning “basically stable, while showing some increase.” The pattern “X中有Y” describes an overall state X with some element of Y inside it. It is often used in economics and formal writing.

This formal structure means “under the circumstances/background of…”. It sets the broader context in which something happens. It is very common in academic, economic, and news writing.

This pattern means “to take A as B” or “to use A as B.” It is used when someone treats something as a goal, focus, method, or standard. It is especially common in formal or strategic descriptions.

This pattern shows a range of development or change: something starts from one form and grows into another, broader form. It is useful for describing evolution, transformation, or increasing scope.