(1) the underground ::
taħt l-art(2) underground station ::
istazzjon taħt l-art(3) underground train ::
ferrovija taħt l-art(4) underground water ::
ilma taħt l-art(5) underground railway ::
metrò(6) by underground ::
billi taħt l-art(7) go underground ::
go taħt l-art(8) underground economy ::
ekonomija moħbija(9) underground passage ::
passaġġ taħt l-art(10) underground river ::
xmara taħt l-art