About 500 newly enrolled students were attending a welcome event at a resort complex when the roof collapsed. _______________________________________Survivors spoke of chaos and panic as students rushed for the exits. Rescue teams were hampered by ice-covered mountain roads, but heavy equipment was later brought to the scene to help lift the twisted metal from the roof that had crashed to the floor. 事发时,500余学生正在度假村参加欢迎仪式._________________________幸存者称事故发生时,学生们争相逃向出口造成紧张混乱的场面.救援工作因冰雪覆盖路面而受阻,但随后不久,用于救援的大型设备就被带到现场,将从屋顶上砸向地面后扭曲的建材清除出去.