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。

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.

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这部自然录音集改变了许多人对鲸鱼的看法，并帮助拯救了成千上万头鲸鱼的生命。

This collection of nature recordings changed the way many people thought about whales, and it helped save thousands of whales' lives.

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您可以保存您的应用程序的每次执行的性能数据集，并比较各次执行的性能结果。

You can save the performance data set for each execution and compare performance results between executions of your application.

youdao

First,this course as I mentioned first is about bridge building: bridge building among disciplines,eclectic, and bridge building in terms of academia and Main street.

正如我开始时提到的，这课程是关于搭建桥梁的：,搭建学科之间的桥梁，广集思源，并搭建学术界与社会之间的桥梁。

哈佛公开课 - 幸福课课程节选