One possibility is that the spring sunshine caused blocks of the ice to expand and break apart, sending loose dust and ice particles crashing down the slope.
一种可能的解释是春季逐渐强烈的光照使得这些干冰膨胀破裂，挤压悬崖边疏松的土和冰滚落下来。
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The loose chunks of ice debris within a comet's gaseous body might also prove more of a nightmare than solid asteroids, and scientists still don't know exactly how to deal with the rockier Cousins.
Apart from the risk that loose sediments exposed by melted ice could slip into the sea as tsunami-generating landslides, the removal of heavy ice could also trigger volcanic eruptions.