assemble :v.聚集，组装
customer satisfaction :客户满意(度)
customer service hotline :客服热线
defer payment :延后付款
delivery :n.递送
installation :n.安装
long-standing :a.长期的
manual :n.使用手册
membership :n.会员身分，会员资格
model number :型号
part missing :缺零件
place order :下订单
receipt :n.收据
subscribe :v.订购