src: One day, of course, the bruised reserves like the lost oil fields of Earth--would all be gone, but the geologists had calculated that Titan could hold the vacuum of space at bay for at least two billion years.
tgt: Um dia, é evidente, as reservas enterradas — como os poços de petróleo extintos da Terra — desapareceriam, porém os geólogos calcularam que Titã poderia manter o vácuo do espaço cercado por, pelo menos, dois bilhões de anos.