You can take a cue from GCC: maintain many sets of environment variables per application and switch from one pool to another depending on the work at-hand.
您可以从 GCC 得到提示：为每个应用程序维护多个环境变量集，并根据手头的工作从一个集合切换到另一个集合。
It may have something to do with the way people go to and from work. Many people in the countryside drive or take public transport for long hours, which leads to the greater need for audiobooks.
这可能与人们上下班的方式有关。在农村，许多人长时间开车或乘坐公共交通工具去上班，这就使得人们对有声读物有着更大需求。
In fact, you can take a cue from GCC: Maintain many sets of environment variables per application and switch from one pool to another depending on the work at-hand.
事实上，您可以从GCC获得一个暗示：可以为每个应用程序维护多个环境变量集合，根据手边的工作从一个集合切换到另一个集合。
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