tab 1/tæb/
n.1. （供手拉或悬挂的）短小的突出物Hang your jacket up by the tap.把你的外衣挂在衣钩上。
2. 易拉罐拉环to open the can by pulling the tab拉环开罐
3. 标签；铭牌Before my first day at school my mother sewed tabs on all my clothes with my name on.入学前一天，妈妈在我所有的衣服上缝上带有我名字的标签。
4. (AmE.) 账单；费用The tab for superhighways may run as high as 2 million dollars a kilometer.造超级高速公路的费用可能达到每公里200万美元之上。