更新1:
went on (went on 怎解？繼續？) a killing spree 無節制的狂熱行為 on a university campus 校園 in Virginia, gunning down (gunning down 怎解？) 32 people before shooting himself in the head.
更新2:
The massacre 大屠殺 has triggered shock and sympathy around the world, and has raised serious questions once again about gun culture (gun culture 怎解？) in the US. The above English was written from ATV Main News at 19:30. You may revise it if you like. Thanks.