For example, a tester can use the hardware one day to test on a specific operating system version and quickly swap out to run a different operating system version the next day.

例如，测试人员可以在某一天使用硬件对特定的操作系统版本进行测试，并在第二天快速地切换到运行不同的操作系统版本。

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You will swap the tube for the trail on the one-day Food Safari tour, led by foraging pro Nick Saltmarsh, one-time supplier to famous London restaurant Le Gavroche.

BBC: The art of urban foraging