BUENOS AIRES, Argentina - Rowdy fans trying to enter a concert by the Rolling Stones without having tickets fought running battles with police Thursday and authorities said at least 20 people were injured.

Dozens of the fans were detained, police reported.

The clashes broke out when scores of fans were stopped by police at the entrances to the Monumental soccer stadium where Mick Jagger and his band were to perform later.

注释：

1、Rolling Stones：滚石乐队。“滚石”是一个在1960年代成名的英国摇滚乐队，是目前举世公认的资历最深、地位最高的乐队组合，其音乐历程几乎见证了整个摇滚乐的发展。“滚石”是个擅长现场演出的乐队，这么多年来始终频繁地活跃在各地的舞台，他们的专场音乐会受到全球歌迷的欢迎。

2、Mick Jagger：米克-贾格尔，滚石乐队主唱，1943年7月26日出生于英国肯特郡的达特福德。

3、detain：v. 拘留

4、clash：n. 冲突

5、break out：爆发