| 1. | Sometimes the user will notice that no progress is being made , such as when a thread is executing a long - running user - initiated task , like spell checking , and may abort the operation or program
有时，譬如当线程执行由用户启动的长期任务（如拼写检查）时，用户会注意到任务没有进展，他们可能会异常终止操作或程序。 |
