Use a browser with built-in translation.

Would be cool yes. But, translation services for platforms like these is quite expensive. More so than the average person would expect.

It is a much, much more reasonable solution to just use a web browser to view the forums and use it to translate it. Anyway, aside from the necessity of using it to launch game. The client is inferior to the average web browser feature-wise.

As an added benefit, using a webbrowser allows you to use Augmented Steam. Which is quite handy for an extension. I used to be skeptical of it but over time it became pretty much an essential for me.

Да, этого не хватает. Простой английский я еще могу сам понять, но если текста много - это становится слишком затратным по времени.

Business use of a translator program is expensive.

Just use a web browser translator extension or just copy paste into something like Google Translate.