zhǔchí yī xiàng huódòng

preside over an act

The phrase 'preside over an act' refers to the role of someone who leads or oversees a particular event or ceremony, ensuring that everything proceeds smoothly. In Chinese, '主持' means to preside or lead, and '一项活动' refers to a specific event or activity. This phrase is commonly used in formal contexts, such as meetings, ceremonies, or performances where one person is in charge.