This is the (key, value) extraction stage and it happens in each spawned process.

这是(key,value)提取阶段，这在生成的每个进程中执行。

youdao

This is the (key, value) extraction stage and it happens in each spawned process.

这是(key,value)提取阶段，这在生成的每个进程中执行。

youdao