avalanche lake的用法和樣例：
例句
- Landslides during the earthquake dammed a river further north, creating what is now called the Tangjiashan lake.
更北的地方，地震造成的滑坡泥石流攔斷了一條河，如今成了唐家山堰塞湖。 - Dramatizing government concern, Premier Wen Jiabao helicoptered in Thursday to inspect the largest lake threatening Beichuan, the New China News Agency reported.
據中新社報道，為了表示政府的關懷，溫家寶總理乘坐直升機前往災區視察威脅北川縣的堰塞湖，這是目前發現的最大的堰塞湖。
