Is it okay to say Strong Languages?
It depends on the context in which you are using the phrase "strong languages." If you are referring to languages that are widely spoken or have a large number of speakers, it would be more appropriate to use the term "major languages" or "widely spoken languages."
However, if you are referring to languages that are known for their complexity or difficulty to learn, such as Mandarin or Arabic, then "strong languages" could be an appropriate term to use.
Overall, it's important to consider the context and meaning behind the phrase before using it.