severedadj.切断的动词sever的过去式和过去分词.severeadj.严厉的；严重的；剧烈的；严格的；严峻的severe fracture严重骨折severe gradient有害坡道severe striking严打severe rainfull强降水severe shortage严重缺乏severe accident严重事故severe migraine严重的偏头痛severe jaundice重度黄疸severe headache剧烈头痛severe slugging严重段塞流