You will be able to translate questions that have been suggested by other users by selecting Menu>Question Factory>"Translate questions".
As you enter, you will find a bar where you can select the language of the questions on the left-hand side and the language you wish to translate them into on the right-hand side.
Then, you will have to translate the question and answer options in the corresponding boxes. Finally, you will need to press the "Continue" button at the bottom of the screen; in some cases you may need to scroll down to find it.
If the question to be translated isn't to your liking, you can select "Skip" on the top right-hand corner to receive another one.