Officials say the exact cause of a North Carolinabeach house fire that killed seven college students is undetermined. But improperly discarded smoking materials cannot be ruled out.
警方表示尚未查明北卡罗莱纳滨海别墅火灾的确切起因，但是不能排除火灾是由烟蒂随意丢弃所造成。
2
Located on the shore of Sullivan's Island off the coast of South Carolina, the award-winning-cube-shaped beach house was built to replace one smashed to pieces by Hurricane Hugo 10 years ago.