论文审稿意见这是啥意思?还有修改的必要么?

论文审稿意见这是啥意思?还有修改的必要么?
Thank you for the opportunity to consider your manuscript for :Selected papers from the .Your manuscript has been reviewed by an expert in this field,and his/her critiques are attached below.Unfortunately,the reviewers have concluded that the manuscript in its present form is not suitable for publication in the ISTS Special Issue.The reviewer also suggested to change the type of manuscript.If you think it worth doing so,please revise your manuscript in accordance with the comments made by the reviewers.When submitting your revised manuscript.
Within 6 weeks from today,please upload a PDF file of the revised manuscript through the "Author Login" page.Please note that this is HARD DEADLINE; after 6 weeks,your paper will automatically be rejected.