extension cycles

例句：

1. 1.The company is looking to extend its product lines in the next few years.
   该公司计划在未来几年内扩展其产品线。
2. 2. The research team has identified several extension cycles that could benefit from further development.
   研究团队已经识别出几个可以进一步开发的扩展周期。
3. 3. The new model will have a longer warranty period, which means it will have more extension cycles.
   新型号的保修期更长，这意味着它将有更多的扩展周期。