(1) the underground ::
o metro(2) underground station ::
estação subterrânea(3) underground train ::
metrô(4) underground water ::
água subterrânea(5) underground railway ::
Metropolitano(6) by underground ::
de metro(7) go underground ::
ir de metro(8) underground economy ::
economia subterrânea(9) underground passage ::
passagem subterrânea(10) underground river ::
rio subterrâneo