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This pattern uses 由 to introduce the agents or participants responsible for something, and 共同 shows they do it together. It is common in formal and business Chinese to describe ownership, organization, or responsibility.
"该公司由两仪万象（北京）科技有限公司、科大讯飞（北京）有限公司、安徽言知科技有限公司、量智臻融（北京）科技合伙企业（有限合伙）共同持股。"
包括 introduces examples within a larger category, and 等 at the end signals that the list is not complete. This is a very common way to give representative examples in formal writing.
"经营范围包括量子计算技术服务、人工智能理论与算法软件开发、人工智能行业应用系统集成服务等。"
In formal written Chinese, 为 can mean “to be” or “to serve as,” especially when giving someone’s role, identity, or status. It is more formal than 是 in many news and business contexts.
"法定代表人为石琦。"
This pattern means “to learn/find out from… that…”. It is often used in news reports to introduce the source of information. 从 marks the source, and 了解到 introduces the information obtained.
"今天（20日）从国家邮政局了解到，前2个月我国邮政行业寄递业务量超330亿件，行业市场规模稳步增长。"
其中 is used to single out one part of a larger set that has just been mentioned. It helps organize information clearly, especially in reports, statistics, and explanations.
"其中，快递业务量累计完成304.9亿件，同比增长7.1%。"
Beijing
science and technology
trade; profession; industry; business
month
to show
postal
artificial intelligence (AI)
to form a partnership
to wait for; to await
to fly
to overtake
to complete; to accomplish
(statistics) compared with the same period of the previous year; year on year; year over year
CL:家[jia1]
variant of 個|个[ge4]
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