A ProgressBar is like an output-only Slider in that it can be used to show incremental activity (progress).

ProgressBar 类似于一个只输出的 Slider，因为可以用它来展示增量活动（进度）。

youdao

The call for service that the officer responded to was what could be considered a burglary in progress or some suspicious activity, and in most cases when an individual is able to present proof that they, in fact, live in the house, the call is resolved fairly quickly.

NPR: Black And Blue: Police And Minorities