time of developing

例句：

1. 1. The economy is developing rapidly in thisregion.
   这个地区的经济正在迅速发展。
2. 2. The companyis developing a new product line.
   该公司正在开发新产品线。
3. 3. The country is developing itsinfrastructure to support the growing population.
   该国正在发展基础设施以支持不断增长的人口。