A large floating chunk of ice split off from a glacier,an ice berg,or a floe.
冰山上崩落漂流的冰块一个大的冰块,从冰川、冰山或浮冰块上脱落
debris glacier:崩落冰川
debris flow ==> 岩屑流,碎石流,泥石流 | debris glacier ==> 崩落冰川 | debris guard ==> 碎片防护板