This means something like "When Roberto is depressed or sad Lorena is."
It would mean a color or a feeling:Blue (color): azulBlue (feeling): triste, deprimido
cuando tiempo triste feliz cansado romantico
when i am sad : cuando estoy triste.i am sad : estoy triste.
cuando la mama esta triste
It means, I'm still sad ,when my mom hit me with a helmet.
ellos ponen la misma cancion que a todos le ponen cuando estan tristes
Translation: Estoy triste cuando no estoy contigo. You could also say "Me entristezco cuando no estoy contigo" (I sadden when I am not with you), but this is more literary, although the emotion comes off more strongly. Just as a note to your translation: "con tú" does not exist in Spanish and always becomes "contigo". (The same with "con mí" becoming "conmigo". "Consigo" has a set of unique rules which is why "con él", "con ella", and "con Ud." do not automatically become "consigo".)
"Que c'est triste - comme c'est triste"
sad is 'triste' in french, so sadness is 'tristesse' :)
Officium Triste was created in 1994.
Pavana Triste was created in 1997.
she is sad - elle est triste