We don't understand them.
We don't understand you (feminine plural familiar and formal in Latin America; plural formal in Spain).
*Las, in this case, is the dative of "a ellas", "a ustedes" (feminine). Only the context avoids confusion.
"Las calles" translates to "the streets" in English.
it means "traces"
las vedas means closures
las verduras means vegtables
A las oho doesn't mean anything. If you meant a las ocho it means "at 8" normally meaning time
"Las" is a Spanish definite article that translates to "the" in English.
what is la mejilla in english
Yes, at twelve.
Trails
carrots.
lines
"Las posadas" would be "the inns" or "the lodgings".