additional burner

例句：

1. 1.We need an additional pair of shoes for the trip.
   我们需要一双额外的鞋子来旅行。
2. 2. The extra money will help us pay off our debts.
   额外的钱将帮助我们还清债务。
3. 3. She added a few more items to her shopping list.
   她在她的购物清单上增加了几个项目。