Noun:

1. a secondary or inferior position or status;

   "tennis has had to take a backseat while his work is so demanding"
   

2. a seat at the back of a vehicle (especially the seat at the back of an automobile)

backwayn.后退距离backn.后面；背脊；靠背；后背；后卫vt.支持；后退adv.向后地adj.向后的；后面的；偏远的；过时的；积欠的back-up circuit[计] 备用电路backmixed reactor返混式反应器backfilling earth回填土back vertex power后顶屈光度backfill grouting回填灌浆back-hoe bucket反铲斗back-up control备用控制backplane routing底板走线backing side trap前级侧阱backtrack parsing回溯剖析

1. Put the small bags in the backseat, please.
   请把那些小袋子放到后座去。
2. No amount of backseat hectoring gets him to move above speed limits that every other vehicle ignores.
   无论我在后座怎么催促，司机就是不愿意像其它车辆一样，改到快车道上去超速行驶。