网易有道旗下首款AI知识库产品开启内测

These reporting phrases introduce information from a source and are very common in news and formal written Chinese. “据了解” means “it is understood/learned that,” showing the information comes from reports or investigation. “公告显示” means “the announcement shows that,” attributing the statement to an official notice.

“主要” is used to show the main aspect, focus, or target of something. In formal contexts, “主要面向……” means “mainly aimed at / primarily for …” and is often used to describe products, services, policies, or audiences.

“在于” is used to explain the essential point, key reason, or core feature of something. It often appears in the structure “A的关键/核心/问题在于B,” meaning “the key/core/problem of A lies in B.” It is common in formal and analytical writing.

“基于” means “based on” and is used in formal Chinese to show the foundation, basis, or source for an action, method, or judgment. It is especially common in technology, business, and academic writing.

This pattern shows that one situation is caused or influenced by another. “受A影响，B……” means “Affected by A, B…” and is very common in news reports and formal writing to explain reasons for changes or results.