addition of complex quantities

例句：

1. 2. 同义词：augment, increase, amplify3. 例句：1. Thecost of the new product is an additionto our budget.
   新产品的成本是我们预算的一个增加。
2. 2.The teacher added some interesting facts about thehistory of the city to the lesson plan.
   老师在课程计划中增加了一些关于城市历史的有趣事实。
3. 3. The company's revenuehas increased by 5% since thelast quarter.
   公司的收入自上一季度以来增加了5%。