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。
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。
This is the standard behavior now, when one cell phone gets pulled out, everyone take that as a cue that it's okay to do your own check-in.
这在现在已经是再普通不过的行为了。当有人拿出手机，那么周围的人仿佛就将这个动作视为一个信号，告诉你现在也可以查看自己的手机了。
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