average payoff

例句：

1. 1. The company's stock price has been on a steady upward trend recently.
   该公司的股价最近一直在稳步上升。
2. 2. The investment in renewable energy has yielded an average payoff of 30%over the past five years.
   过去五年中，对可再生能源的投资平均回报率为30%。
3. 3.The new product has received mixed reviews from customers, with some praising its average payoff and others criticizing its design.
   这款新产品收到了褒贬不一的评价，一些顾客称赞其平均回报，而另一些则批评其设计。