owed for a time in the past 到期未付的；拖欠的◆The company owed $2 million dollars in back taxes. 公司拖欠 200 万元的税款。⨁back pay / rent / taxes 欠薪／拖欠租金／拖欠税款
of or from a past time 过去的；过期的◆back issues of a magazine 过期杂志
●on the back ˈburner () (about an idea, a plan, etc.) left for the present time, to be done or considered later （指主意、计划等）暂时搁置➡ idiom at front adj.●take a back ˈseat (to sth)
to be given less importance than sth else 处於次要地位◆Safety has taken a back seat to the need for cost reduction. 为降低成本，安全的重要程度被降低了。
to let other people play a more active and important role in a particular situation than you do （在特定情况下）允许他人领先，甘愿居於人下，让位◆Mr Clark has decided to take a back seat and be a non-executive director. 克拉克先生决定让位，做一名非执行董事。
➡ idiom at queue nounbuy-back dial-back write-back
