MySQL for translation ?

I have a web site for online ads. I want to translate my web site in at least 3 languages. The main problem is that I don't know which solution I should use... I have one solution but I think it will slow down my web site... The solution is: put all the words (or phrases) in a database and just do some selects in the database. the table it will look like this (example): Id Word En Ro 1 Iagree I agree. Sunt de acord. I will select using "Iagree" identifier and I will get the translation in both languages. The question is... It will slow down a lot this procedure in case of a web site full with pages, search engine, forum, boards etc., and minimum 10.000 visitors a day ? Thanx a lot Marian