progress bar

• 进度条

progress bar的用法和样例：

例句

1. The progress bar is meant to measure some task.
   进度条用来对某些任务进行测量。
2. Progress bars are commonly used to provide feedback to the user when downloading large files or performing similar long-running tasks.
   进度条通常是在下载大文件或执行类似的长时间运行的任务时为用户提供反馈。