As we know that the physics Stack Exchange site is an international website, there must be a language translation technique for non-English speakers as they face problems to express them freely.
There simply are no such language translation tools $-$ technical language is too complicated, and machine translation is (intrinsically?) not good enough to handle it.
If you have any specific tool in mind that you'd like to propose, then you're obviously welcome to propose it. However, it is your job to go and research what tools there are out there, and to put forward a compelling case for why any individual tool you find should be added to the site.