Meaning
Life goes on / There are plenty of fish in the sea
Example
Depois que acabei meu casamento, começaram a aparecer pretendentes. A fila anda!
After I ended my marriage, suitors started showing up. Life goes on!
Origin
The origin is not well documented. The phrase appears in Brazilian Portuguese popular speech from the 20th century and has been associated (without direct proof) with a 1970s/80s urban phrase about opportunity and movement.
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More idioms
Acertar na moscaTo guess correctly / To hit the nail on the headAmigo da onçaA fake/false friendAndar na linhaTo toe the line / To behave properlyArmar um barracoTo cause a public sceneRodar a baianaTo cause a public scene / To go ballisticArrumar sarna pra se coçarTo ask for troubleArrastar as asasTo hit on someone / To flirtAbrir o jogoTo come clean / To open upArregaçar as mangasTo roll up one's sleeves / To get to workAgarrar com unhas e dentesTo hold on for dear life / To seize an opportunity