(1/2)the marathon has been an olympic event since the modern games start

(1/2)the marathon has been an olympic event since the modern games start
(1/2)the marathon has been an olympic event since the modern games start

(1/2)the marathon has been an olympic event since the modern games start
自从现代奥运的兴起,马拉松就作为其中一个奥运比赛项目了

watching the games has been more and more popular since china retured 自1984年中国重返奥运舞台后，人们越来越乐意去看观看比赛了。 自从中国

自从现代奥运的兴起至今马拉松就一直是奥运比赛项目