The number of interested contributors usually exceeds the number of available cover pictures. Therefore, we cannot guarantee that your artical will be chosen, even if you have provided a suitable graphic.

，

所有的文章在接受后编辑都会邀请提交封面设计。
有基数编辑才有得选。
想要中封面，最好是找专业设计公司制作。中的概率会高很多。