On Jupiter's moon Europa, scientists have found dark stains on the ice that have them wondering if they might be caused by a similar process.
科学家在木卫二的冰面上发现了暗斑，这使他们猜测其形成过程是否与上述现象相同。
It prevents dirt, soils, dark liquid, and oil stains from penetrating into the surface.
可以防止污垢，土壤，深色液体，和油渍渗透到石材表面。
It prevents dirt, soils, dark liquid, and oil stains from penetrating into the surface.
可以防止污垢，土壤，深色液体，和油渍渗透到石材表面。
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