Sent_en: 2zh 52 people were killed and hundreds more injured on July 7th 2005 when four suicide bombers blew themselves up on three separate London Underground trains and a public bus.
Sent_yy: 2005年7月7日，四名自杀式炸弹袭击者在伦敦的三辆地铁和一辆公共汽车上爆炸，造成52人死亡，数百人受伤。