A fanfare is sounded, the Olympic fire is extinguished, and to the strains of the Olympic hymn the Olympic flag is lowered and the Games are over.

号声响起，圣火熄灭，伴随着奥运会歌的旋律，奥运会会旗降下，奥运会结束。

youdao

The lyrics to the Olympic hymn are "immortal spirit of antiquity". The Olympic hymn was first played at the 1896 Games but wasn't declared the official hymn by the IOC until 1957.

奥运会圣歌的歌词是“古代不朽之神”，奥运圣歌首次演奏是在1896年奥运会上，但直到1957年，才由国际奥委会宣布为正式会歌。

youdao

Half the Olympic program, on the other hand, was given over to religious ritual: processions, hymn-singing, incense-burning, gory animal sacrifice and strange incantations by exotically attired priests.

WSJ: The Ancient Olympics: Mud, Sex, Hymns...Sports Too