孩子们答应每天给奶奶写一封信，所以他们立即开始了他们的任务。
The children had promised to write a letter to grandmama every day, so they immediately started on their task.
当选择一个元素时，它立即成为任务上下文的一部分，并且被展开。
As soon as you select an element, it becomes part of the task context and unfolds.
CANCEL将立即停止一个启动的任务。
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