Translation App will help
Tough to understand what the question really is about but guys answered
Not sure but you definitely don't need one for the Hong Kong mall. There's plenty of employees there that understand English but not all of them can speak it well understandably.
Good question, not sure what you mean but Translate Google is pretty good at providing a conversation type translation. However the stand alone translators will work in situations where there is no access to the web, while online apps will not. Google will on some languages provide a download of the language that will provide some translator ability. These translators are making international travel possible without having to learn the language.
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