The reviewers or editors may have suggested further changes or improvements to your revised manuscript. In this case, the status would remain as "revision" until the additional revisions are reviewed and accepted.

The revised version you submitted is now under another revision to make sure that the previously-requested revision points have been completed by you.

This is simply to understand that: The paper needs further revision from the view of reviewers. It lacks clarity and is not in best form for the publication. If you wish you can withdraw the paper at this stage. Further, again second or third revision is required. It does not guarantee that the paper is publishable. Thus, best way is to focuss on the comments of the reviewers. Answer it well to each point. Since time is provided, full attention must be given on the work. If needed you can take help of your classmates in subject area and give his or her name in the acknowledgement section.