commercialismn.商业主义；营利主义commercialadj.商业的n.商业广告commercial invoicf[经] 商业发票commercial streets商业步行街commercial flights商务航班commercial venture商业投资commercial machine自动售货机commercial secrets商业机密commercial science商业学commercial airport商业机场Commercial broiler商品肉鸡commercial lodging商业性住宿处