Subject + 主办 + Event
主办 means 'to host' or 'to organize,' referring to the act of being the primary organizer of an event, conference, or competition. It is commonly used for large-scale events such as the Olympics, international summits, and festivals.
这次国际会议由北京大学主办。
Zhè cì guójì huìyì yóu Běijīng Dàxué zhǔbàn.
This international conference was hosted by Peking University.
我们公司主办了一场大型音乐节。
Wǒmen gōngsī zhǔbàn le yī chǎng dàxíng yīnyuè jié.
Our company hosted a large-scale music festival.
下届奥运会将由哪个城市主办?
Xià jiè Àoyùnhuì jiāng yóu nǎge chéngshì zhǔbàn?
Which city will host the next Olympic Games?