I have just found one online tool that will do some English to Arabic translation which is here :
http://www.lingvosoft.com/English-Arabic-Dictionary/
I have only used it to try a few words and it seemed okay but as with all online translators exercise caution and check any Google and OVT results first !!
They also appear to have online translators for Japanese, Korean, Persian (Farsi) and Russian as well as a couple of others. Only some are currently active so the Chinese/ Hindi/ Thai/ Hebrew etc doesn't currently work unfortunately. I haven't tried any of the others or used this one extensively but hopefully it may be of use to other members.
Regards
David