I don't want to discourage these new members, but ignoring them about what they are doing can be bad for the future. I want them to be more helpful and want to see them contributing to the forum one day.
Well, there's no other way to make them stop other than calling them out and telling original creators what's going on and unless you do it, they will just keep doing that.
Its pretty obvious that this guy's English is not on the adequate level to even think about translating so no wonder that you suspect he uses Google translate.