Kummer extension

例句：

1. 1. The company has decided to extend its reach into new markets.
   该公司决定将其业务扩展到新的市场。
2. 2. The scientist conducted an experiment to extend the lifespan of plants.
   科学家进行了一项实验，以延长植物的生命期。
3. 3. The team extended their cooperation to include additional tasks.
   团队将合作范围扩大，包括额外的任务。