The TimerTask class has a cancel method that you can use to cancel subsequent invocations of the task.
timertask类有一个cancel方法，可以用它取消对任务的后续调用。
People think we should cancel English class and open course of the Chinese traditional literature and virtues.
人们认为我们应该取消英文课，再开设中国传统文学和美德的课程。
I also wish that you can give me a 24 notice if you need to cancel class, unless it is a real emergency.
如果你需要取消一门课，希望你能提前24小时通知我，除非发生意外。
The mother wrote that for the last few days the kids in her son's class had been worried and upset that they might have to cancel their trip because of a shutdown.
这位母亲写道，在几天前她儿子班级的这些孩子们还非常担心和不安，由于一些地方关门他们将不得不取消行程。
I am going to have to cancel this evening's make-up class because I have still not recovered from the flu.
我不得不取消今晚的补课，因为我感冒还未康复。
If a time-out expires and an exception is thrown, the server class should cancel the underlying operation.
如果超时过期并且引发了异常，服务器类应取消基础操作。
If a time-out expires and an exception is thrown, the server class should cancel the underlying operation.
如果超时过期并且引发了异常，服务器类应取消基础操作。
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