职场英语 外贸价格术语 职场英语:外贸价格术语价格术语trade term (price term)运费freight单价 price码头费wharfage总值 total value卸货费landing charges金额 amount关税customs duty净价 net price印花税stamp duty含佣价price including commission港口税portdues回佣return commission装运港portof shipment折扣discount,allowa