supplementary storage

例句：

1. 1. The company has invested in a new warehouse to supplement its existing storage capacity.
   该公司投资建设了一座新仓库，以补充其现有的存储能力。
2. 2.The extra storage space will be used for storing seasonal produce.
   额外的存储空间将被用于存放季节性农产品。
3. 3.The government is considering the implementation of a policy to encourage businesses to invest in supplementary storage facilities.
   政府正在考虑实施一项政策，鼓励企业投资于补充存储设施。