Well thats basically what patchou said
And is kinda obvious, if is isnt your mother language, you will not be able to tranlate it 100% well, mainly because it isnt an easy job
its not just translating stuff, you need the words to fit in the space you have, so many times you will have to change words and phrases a bit, and if you dont know enough, well...
There are enough people whose mother language is hindi for what i have seen, so...