en or a? Which one means "at"?

Question

en or a? Which one means "at"?

(In latin america)

Answer 1

Usually, "at" will be "en," but there are also cases when it is "a."

at noon = al mediodía
at a distance = a lo lejos

It can also be por.

To be angry at something = estar enojado por algo
at last = por fin

It can also be the gerundio.

at play = jugando