- 来源于 láiyuányú to originate into originate in; to stem from; to be rooted in
- 传染来源 chuánrǎnláiyuán source of infectionA person, animal, or substance that contains an infectious agent and can transmit it directly to a host.
- 消息来源 xiāoxiláiyuán news sourcesource of news; person or organization that provides information