The snowflakes falling outside of the igloo, in the harsh Alaskan winter, quickly melt when they land on its roof, and provide a replacement layer of insulation for the igloo.

• 爱斯基摩人的冰屋大家一定都听说过吧？这可是名副其实的冰雪房子。爱斯基摩人冬天狩猎的时候就会用这些冰屋做休息站。