extra expenses

例句：

1. 1. We decided to go on a trip and spent a lot of extra expenses.
   我们决定去旅行，花了很多额外的费用。
2. 2.The company had to pay for the extra expenses incurred during the project.
   公司在项目中产生的额外费用不得不支付。
3. 3. The extra expenses were mainly due to the higher prices of the food and accommodations.
   额外的费用主要是由于食物和住宿价格的上涨。