(1) the underground ::
sa ilalim ng lupa(2) underground station ::
underground station(3) underground train ::
underground train(4) underground water ::
tubig sa ilalim ng lupa(5) underground railway ::
underground railway(6) by underground ::
sa pamamagitan ng ilalim ng lupa(7) go underground ::
pumunta sa ilalim ng lupa(8) underground economy ::
underground economy(9) underground passage ::
daan sa ilalim ng lupa(10) underground river ::
underground river