Because pv cannot calculate the total number of bytes to expect in the transfer, it shows throughput so far, time elapsed, and a special indicator that reflects activity.
因为pv无法计算出要传输的总字节数，它只能显示到目前为止的吞吐量、经过的时间和一个反映活动的特殊标志。
Here, the subshell command du -sh work | cut -f1 yields the total size of the work directory in a format compatible with pv.
在这里，子shell命令du -sh work |cut - f1以与pv兼容的格式生成工作目录的总大小。
Press Release after the PV value in general there is a rise in the total process.
新闻发布后，一般PV值总有一个上升的过程。
The total energy consumption of the house is less than the harvest from the PV elements.
房屋的总能耗少于光伏元件获得的能源。
The total energy consumption of the house is less than the harvest from the PV elements.
房屋的总能耗少于光伏元件获得的能源。
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