petabyte/ˈpet̬.ə.baɪt/名词拍字节(电脑信息单位,记为PB,等于1,125,899,906,842,624个字节)The computer boasts a 1.7 petabyte hard disk.该电脑拥有1.7PB的硬盘。想跟读,去练习