A source of endless complications or trouble.
Una fuente de complicaciones o problemas interminables. (una fuente de komplikasiones o problemas interminables)
"Discussing that topic will open a Pandora’s box of complaints."
"Hablar de ese tema abrirá una caja de Pandora de quejas." (ablar de ese tema abrira una kaja de pandora de kejas)
to become clear to someone after not realizing
to aim for something very ambitious or difficult to achieve
difficult situations will improve over time
to pretend to be brave when you are actually scared or worri...
to make exceptions; to modify rules slightly
to not lose confidence or courage