portern.搬运工；（列车）服务员；杂务工n.门卫n.<旧>黑啤酒Portern.波特(人名)Porter starred in that film.波特主演那部电影。Porter' s competitiveness model电梯模型Porter-Mathew obstetric forceps波-马二氏产钳Porter's five competitiveness model升运(器)链Porter Need Satisfaction Questionnaire NSQ需求满意问卷