leisure前面有介詞嗎

leisure的前面有介詞on

例句

1、

Research on Leisure City Development in China Based on City Leisure Index

基於城市休閒指數的中國休閒城市發展研究

2、

Research on Leisure Sports on Promoting Health Development of College Students

大學生閒暇體育促進健康發展的研究

3、

Interaction research on leisure culture characteristics and urban development in Qingdao

休閒文化特色與青島城市發展互動研究