That could mean anything. Try again with more specific context.
I'm guessing that you are speaking of transportation, in which case it means, "by way of"
The question "Por que la pregunta mean in English" translates to "Why does the question mean in English?" in English.
por la vida= for life
"Por la última vez" translates to "for the last time" in English.
humidity colds
I already told you about her.
It means: The food is by the table.
"Son las siete por la mañana" means "It's seven o'clock in the morning".
in the street along the street depends on the sentence
"Come to the board, please."
muchas gracias por la entrevista means: thank you for the interview.
Caminando por la Calle
"In/during the afternoon" in the afternoon/in the evening In the afternoon. Example: Me gusta esquiar por la tarde. Translated: I like to ski in the afternoon.