plan of renewal and upgrading

例句：

1. 1. The company has developed a comprehensive plan for renewal and upgrading its infrastructure.
   该公司已经制定了一个全面的计划，用于更新和升级其基础设施。
2. 2.The government is considering implementing a new plan for renewal and upgrading the public transportation system.
   政府正在考虑实施一个新的计划，用于更新和升级公共交通系统。
3. 3.The university has launched a campaign to promote the plan for renewal and upgrading of its libraries.
   大学启动了一个活动，以推广图书馆更新和升级的计划。