4K 女士使用智能手机从邮局自助终端机接收包裹的特写镜头。邮件递送和邮政服务，在线购物，电子商务概念 影视素材 女士使用智能手机从邮局自助终端机接收包裹的特写镜头。邮件递送和邮政服务，在线购物，电子商务概念 影视素材
4K Close up of a worker using a heavy duty grinding machine to smooth and level a concrete floor industrial equipment in action at a 股票录像 Close up of a worker using a heavy duty grinding machine to smooth and level a concrete floor industrial equipment in action at a 股票录像
