ranked的意思是排列；把…分等级；属于某等级；使排成行；是rank的过去分词。例如：She ranked her students according to their grades. ranking的意思是排名；地位；排位（尤指在体育运动中）；地位高的；高级的；是rank的现在分词。例如：He has improved his ranking this season from 67th to 30th.