"These buried ice sheets that extend from the poles all the way down to 45 degrees or so (north and south latitude) don't quite cover half of the planet, but (they) come close," he said.

“这些埋藏着的冰原从两极一直延伸到(北纬和南纬)45度左右，没能完全覆盖半个火星，但(覆盖面)接近这一水平。”Shane Byrne表示。