joint venture
noun [ C ] uk/ˌdʒɔɪnt ˈven.tʃər/ us/ˌdʒɔɪnt ˈven.tʃɚ/
联合企业，合资公司;联合商业活动
a business or business activity that two or more people or companies work on together
The website was a joint venture between him and his partner. 这个网站是他和合伙人的合资公司。