Not all questions are made equal. Some require expert knowledge, some can be sufficiently answered by a dictionary. Should we allow the second kind, and if we don't, where do we draw the line?
I think simple how-to-translate questions should be allowed if they there's some context provided that does not allow to use translation from dictionary or topic-starter explained why he can't use dictionary, e.g.
How to translate "A" to Russian
How to translate A to Russian in the phrase "Blabla A blabla"
How to translate A to Russian? I checked the dictionary and there's А and Б options which one is more appropriate in my case (case explanation followed)